I've been using 2.1 Stock (I tried some ROMs long ago but they were still buggy). Today I tried FroyoPro 2.5 and it worked perfectly but one thing: the ANT+ service, which I use 3-4 times a week. I've read threads about people asking for ANT+ but i have found no solution in them.
Tried some ROMs without success and ended up softbricking my phone. I got it solved now.
Do you know any stable ROM using 2.2+ that can support ANT+? I can't unlock boot (it's amongst the newest revisions) and have to run stock kernel, and sticking to 2.1 and Android Market is killing me.