Well, just to follow-up, I ended up getting the implant at Bangkok Hospital Dental Center (BHDC) and it's been great. It was the Straumann implant with a "Roxolid SLA Active" crown. It was interesting that they did not do an impression for the crown but scanned my mouth and (I think) they 3D modeled the crown, or the mold for the crown. In any event, it fit perfectly from day one. It probably took six months to complete.
I had a second implant done on a root-canal that went bad on the opposite side. This one (just got the crown today) was done at "Maha Chakri Sirinhorn Dental Hospital" (MCSDC) in Salaya. They used the same Straumann implant but did not scan my mouth for a digital crown. The crown was done using an impression. This one seems to fit perfectly as well. Implant and crown were about THB15K cheaper, but altogether probably THB20-25K cheaper.
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Either place is great for implants, with similar quality work, but with MCSDH being significantly cheaper.
I would highly recommend MCSDH for anyone on a budget on that side of town. It's a nice facility with good service and for more traditional dentistry they are probably 80-90% cheaper than BHDC,