I got mine to about 170 - 180 free.
Haven't been game to kill any of the other Samsung system apps
If this is so, then how do you explain devices such as nexus one and htc evo having over 200 MB of free ram while the galaxy S never has more than 150 MB free.
Sent from my GT-I9000 using XDA App
During boot ups I can get over 200 MB available, maybe 240ish. 24 hours+, while running ATK, Widget Locker, Launcher Pro, Weather & clock widget, and Quick Desk I have 168mb. Taking off a few of my ignore list, I got upto 195 while still allowing my core UI (Launcher PRO, quick desk, & Widget Locker plus ATK to kill & state the available memory). Per Samsung Task Killer here are the memory that my custom UI takes up:
Widget Locker 8.21
QuickDesk 10.33
LauncherPRO 18.66
These numbers, of course, aren't static. But, I definitely have 230MB potential free if I use stock. Also, I think my keyboard also takes up, additional, memory but it isn't listed so I can't find it.