Dear Fellow Diver,
The Ocean Rover gets every bit as good reviews as the Aqua One, and then
  some. From a January 2004 trip, long-time Undercurrent correspondent Benjamin Glick (Willamstown, MA) reports "lots of small critters including frogfish, ghost
pipefish, and harlequin shrimp too numerous to count. Schools of fish, cuttlefish,
squid, octopi, an hour with two whale sharks, four leopard sharks on another dive,
and five mantas on one dive. The boat was in pristine condition. Try to visit
Cambodia as Angkor Temples at Siem Reap are only a one hour flight from Bangkok.
Royal Exclusive Travel in Bangkok made all my travel reservations in SE Asia and
were excellent (www.royalexclusive.com). 
Also on a January trip, Linda Gettmann (Deer Harbor, WA) says: "Fabulous service
  and wonderful diving on this two-year-old, built-for-diving boat. We went up
  north into Myanmar (Burma)
  waters and dove the Mergui
  Archipelago and Burma Banks.
  Viz wasn't so great, but the
  marine life made up for it.
  Excellent accommodations and
  food, the service is beyond
  belief, they help you on with
  your gear, even zip up your
  wetsuit. Mark Strickland is
  the photo pro, does an excellent
  job and will help you
  with any camera or equipment
problem." 
In March 2004, Ann
  Mcgrath (Alexandria, VA)
  reports the Ocean Rover "is
  incredibly spacious for 16
  divers. Cabins are very
  large, with plenty of storage.
  The bathrooms have tile
  floors and normal-size toilets.
  The diving in the
  Burma banks is clear and
  great -- still plenty of current,
  but great stuff to see.
  We didn't encounter whale
  sharks, but we did see leopard
  sharks, manta rays, cuttlefish
  laying eggs, lots of
  harlequin ghost pipefish, as
  well as their endemic saddleback
  anemone fish and the
  amazing mandarin shrimp!
  They have a CD burner if you
  want to copy your digital
  pictures to CD."  
Harry A. Kreigh
  (Sacramento) took an Ocean
  Rover trip in April. It's
  "one of the best live-aboards
  anywhere. The Thai crew provided
  topnotch personalized
  service. A variety of Thai
  cuisine (noodles, curries, and stir-fry dishes), vegetables,
rice and salad, as well
as some western choices.
When extended travel was
required, only three dives
were offered (all before
lunch, and a 60-minute limit
was imposed for the third
dive only). Multiple mantas
(3-4) were repeatedly encountered
during four dives at
Black Rock. Several leopard
sharks observed at Fan Forest
Pinnacle and Koh Bon. A few
hawksbill turtles were seen
throughout the trip. No
whale sharks sighted. Some
outstanding dive sites with
beautiful, lush soft corals
and a variety of reef inhabitants,
but also some mediocre
sites, few large fish/sharks
and typically poor/fair visibility
in Myanmar. The
corals and fish populations
appeared healthier with fewer discarded fishing nets and much less rubble from
dynamite fishing than previously seen in 1999. We opted to skip Burma Banks; silvertips
have not been seen there regularly all season. Three weeks prior to
departure I was informed that Mark Strickland would not make the trip with us.
The Wat Chalong temple is worth a visit -- intricate and ornate sculptures and
distinctive/colorful architecture." 
Another option is the Mermaid 1, at better prices than either the Aqua One  or Ocean Rover, which cater to Americans. Mikki Betker and Mike Bush (Mableton,
  GA), on their fifth live-aboard trip, write of their January trip: "We had an
  excellent experience with a relatively unknown operation in the U.S., although
  they have been sailing for over three years. Mermaid 1 and 2 are European-based
  and German-operated luxury boats. The newer Mermaid 1 has private baths. The
  service and facilities were outstanding. Our room had two double beds side-byside
  and our own TV. Our trip included 28 dives, mostly in the renowned Similan
  Islands and world famous Richelieu Rock. Huge schools of juveniles everywhere.
  We routinely saw the regulars: anemone fish, lionfish, scorpionfish, Moorish
  idols, sweetlips, barracuda, triggerfish, parrotfish, batfish, etc. We saw a couple
  sea horses, blue spotted sting rays, a ghost pipefish, and several octopi.
  We saw the 'big guys' on at least every third dive: leopard sharks (within inches!),
  reef sharks, manta rays, and sea turtles. Each meal consisted of three or
  four dishes, both Thai and western-influenced, with fresh and varied fruits.
  Alcoholic beverages could be purchased on the 'honor system.' The other crew consisted
  of seven Thai-born young men who spoke no English yet were very professional;
  we could not even put on our own wet suits without their assistance.
  Diving was as easy as it gets: just giant-stride off the back of the boat or
  backwards-roll off the skiff. Just pop up whenever you want, and the boat or
  skiff would promptly pick you up."  
Diver's Compass: Ten diving days on the Ocean Rover run $3,100. Website is
  www.ocean-rover.com. ... Six diving day trips on the Mermaid 1 are $1,500.
  www.seaworld-phuket.com/lab.htm.