I keep my eyes on the Rhodium GSM thread and
this is what NRG has to say about the August 18 ROM:
Originally Posted by NRGZ28 
Yep.. been playing with the Aug 18 ROM on my own Tilt2 device and it's very quick compared to the Aug 13 ROM. I've played a bit with the memory management in the kernel, so hopefully we'll see better RAM management with this release. I got 70 megs out of 181 free on boot with Sense 2.5 loaded then it winds down to about 59-60. Which I think is plenty for day to day usage. In comparison, the HD2 gets about 260 free (LOL!). 
I dont wanna say it... but I think Aug 18 may just be my best ROM yet.
So...looks promising! I'm off to flash...
EDIT: I nearly died when I read that the Leo gets 260 free. 260...that's more than our entire RAM!