Well, this is simple. Since there are a lot of bands or musicians that only do music for games, it would be cool that you mention bands or musicians from games that you like. Example: I like a lot Econoline Crush from the PS game Sled Storm, Saki Kaskas from various Need for Speed versions, and obviously the VRock station form GTA Vice City. You can mention only the game if you want to, since not all the games have music credits.
The SH2 OST is just too good to pick a favorite from. It hits a bit of a slump between tracks 11-14, but other than that the flow is perfect.
I like True a lot. Null Moon is similarly cool. Forest, Ordinary Vanity, Love Psalm. And yeah, the tracks you two posted. But really, it's my favorite ambient album and my favorite game soundtrack of all time, I can listen to it on repeat over and over again.