FWIW, I'm currently working in Thailand and can support some of the advice offered above.
For the BCD, as long as you can demonstrate all skills all the way through the Rescue Diver course, you can get whatever style you like. Back-inflate, "poodle" jacket, whatever, as long as it has a quick release and the skill attributes can be demonstrated and copied by student divers, that's all that's really important. I once had a DMT in a bp/w/long hose system and it was a royal pain for skills demos. The equipment replacement and removal was so different that students couldn't just copy it, and because it was Hogarthian (with one long piece of webbing holding everything together and on the diver) getting it off the "victim" for Rescue demos was extremely difficult. Air sharing drills are way different with a long hose. I'm in favor of instructors wearing similar gear to what their students are using regardless of what course is being taught... when I took my tech classes, I would have been amazed if my instructor tried to conduct a class using a rebreather when the rest of us were in bp/w and twins.
Ease of getting service is critical. For example, I recently had a cracked corrugated hose on my low-pressure inflator at the end of one dive day, and all I had to do was walk into the shop and wait five minutes to get it repaired. Brands that are easy to get service for here are Scuba Pro, Mares, Aqualung, OMS.
For similar repair/part/technician reasons, I wouldn't recommend Sherwood regs for Thailand. They are hard to get service for. There are some shops/techs, but the parts sometimes have to be ordered and that can take a while. Same holds for Oceanic and several other brands popular in the US but not widely distributed elsewhere.
For gauges, follow the same guidelines for getting repairs and spare parts. I recently decided to have a pair of console-mounted computers re-booted into a wrist-mount-style. It took months to get the relevant parts for these Oceanic Veos from Bangkok (I assume they had to import them in). I also had a visiting diver need an emergency repair for an Aeris computer, but we couldn't get it done at all. For gauges, computers, etc., the easiest to service here are Suunto, Mares, Aqualung, Uwatec.
Hope that helps.
For the BCD, as long as you can demonstrate all skills all the way through the Rescue Diver course, you can get whatever style you like. Back-inflate, "poodle" jacket, whatever, as long as it has a quick release and the skill attributes can be demonstrated and copied by student divers, that's all that's really important. I once had a DMT in a bp/w/long hose system and it was a royal pain for skills demos. The equipment replacement and removal was so different that students couldn't just copy it, and because it was Hogarthian (with one long piece of webbing holding everything together and on the diver) getting it off the "victim" for Rescue demos was extremely difficult. Air sharing drills are way different with a long hose. I'm in favor of instructors wearing similar gear to what their students are using regardless of what course is being taught... when I took my tech classes, I would have been amazed if my instructor tried to conduct a class using a rebreather when the rest of us were in bp/w and twins.
Ease of getting service is critical. For example, I recently had a cracked corrugated hose on my low-pressure inflator at the end of one dive day, and all I had to do was walk into the shop and wait five minutes to get it repaired. Brands that are easy to get service for here are Scuba Pro, Mares, Aqualung, OMS.
For similar repair/part/technician reasons, I wouldn't recommend Sherwood regs for Thailand. They are hard to get service for. There are some shops/techs, but the parts sometimes have to be ordered and that can take a while. Same holds for Oceanic and several other brands popular in the US but not widely distributed elsewhere.
For gauges, follow the same guidelines for getting repairs and spare parts. I recently decided to have a pair of console-mounted computers re-booted into a wrist-mount-style. It took months to get the relevant parts for these Oceanic Veos from Bangkok (I assume they had to import them in). I also had a visiting diver need an emergency repair for an Aeris computer, but we couldn't get it done at all. For gauges, computers, etc., the easiest to service here are Suunto, Mares, Aqualung, Uwatec.
Hope that helps.