Vietnam is getting a lot of coverage and tourist numbers rising exponentially, and yes leaving Thailand behind in that respect...but is it a better option. I've visited 3 times in the past year or so, and I really enjoyed my time there, and only as a tourist. Visas are an issue, 90 days or 45 free entry for most countries, a simple 90 report on line is far better than a whole day travelling and costing upto 6k baht. Language, well learn the basics and with translate apps etc isn't really a problem. The cost on accomodation in Vietnam is spiraling, you can't find anything now for under US$300 and a house with garden will be considerably more. Food, yes bahn mhi for $1 and a huda beer 60 cents but restaurants are typically priced the same as Thailand. Some great tourist attractions, you only really need to visit once. Internet on a par with Thailand. Health, haven't used in VN but have heard great reports especially on dental work. Scams and over charging is endemic in Vietnam unless you know the prices. It's Thailand for me but a change in the LTR visa for Vietnam may make me think again