Yeah, the H3 has 3 presets for GF, plus you can set your own custom. The Emergency GF setting is 95/95. I think that matches mostly closely to DSAT. But, the difference between 90 and 95 just isn't enough to make a difference on a purchase (to me).
I don't like how big the TX1 is, but for a good used price, I'll buy one because it does trimix and does Buhlmann w/GF. I'm working towards getting a Trimix cert eventually, so that has become a priority now.
Funny, really. Before I ever finished my OW training, almost 2 years ago, I posted a thread here where I had been doing my research and shopping and concluded that the TX1 looked like a good first computer choice for me. The Scubanati all told me that I was being dumb and I shouldn't buy one. Now, here I am, after trying what the Scubanati told me to buy, right back where I started.
Related: Now that Recreational Trimix is a thing, it seems like more companies would be making Rec-oriented computers that support Trimix. Right now, I can only think of the Eon Steel that supports Trimix and is really targeted at more of a recreational audience. The older SP Galilieos did, but the current ones do not. Obviously, the Shearwaters do, but they are definitely not being marketed to the Rec crowd.