Ok, I reflashed last night using 21015 SYS with 21018 XIP by Former and cooked it with SSK Kitchen C2. I had to set PP to 9.5 megs rather than 6-8 (which is what I normally use). It was locking up on me at < 9 Megs... but since I've changed the PP to 9.5 Meg the ROM has been solid. I did lose the 1 Meg worth of free RAM but I'm going to tone down the file system cache down to 1MB from 2MB to gain the lost memory.
So far i had no issues, stable, I've got a lot of stuff running, and they all seem to play nicely.
I also installed TouchResponse for heptic feed back on screen touch, and it's working very nicely.. Also seem to have pretty good battery life... I'm down 10% since 7, and I've been Bluetooth Tethering...
I know the GPS works because i've done this combo before... but I'll try again during lunch... Keep ya'll posted.