I, and many buddies, use a Suunto Vyper in gauge mode. Used, they're cheap ($250 max), have user replaceable batteries, have a backlight (actually pretty worthless), fit Tobin's DSS bungee boots, and are downloadable (which I like). We've also found them to be extremely reliable. No complaints. I also have a Suunto Vytec (also in gauge mode) that I bought used on TDS for about $250. Actually like it a bit better (has seconds). Either would be fine and seem to be in the general price range of the Uwatec BTs.
Edit: You don't have to put these Suuntos into gauge mode more than once. Do it once, and it stays like that until you decide to change.
Edit: Sorry can't help much with the BT issue. I know a bunch of people diving D3s (or whatever just replaced the D3) who got theirs at Scuba Shack in CT. You could try calling them (shop owned and run my a GUE instructor).