First congratulations for choosing this unit, more to come.
Regarding Bluetooth it does work for file transfer, but not for headset - status in GAOSP.
Bluetooth does work for headset (not sure for file transfer, I think that was introduced in Android 2.x) in Galaxo.
Note regarding custom ROM's:
Galaxo is based on Android 1.6 and Sam*censored official JC6 firmware release.
Good points: really fast, everything works, nice collection of apps (but... ...continuation below)...
Bad points: old OS (it is Android 1.6), no one (majority) develops for Android 1.x anymore (apps), and many more when you compare it to GAOSP (visually)
GAOSP is based on Android 2.x (latest Gingerbread - 2.3 Android), better to say CM7 (CyangenMod for those who don't know) with heavily optimized code for Galaxy.
Good points: well it looks nice, many apps to choose from, Bluetooth file transfer, camera options (GAOSP 2 Beta 3), ROM for the future or now
Bad points: WIP (work in progress), still Beta (but daily usable), lags a little for some, still no sound in Bluetooth headset,...
All in all, lets face it Galaxy (i7500) is an old unit (in terms for technology). I don't see a reason to buy now (especially new
). There're many better units to choose from and I mean it. Its specs are outdated compared to todays devices. The greatest bug in its construction is to little RAM
and it really hurts. You will see what I mean when/if you flash GAOSP on it. But there is some help for that, but don't expect miracles. Well Galaxo is good (faster) ROM then GAOSP but according to Obi (one of developers of GAOSP) GAOSP with Gingerbread is fast like Galaxo (didn't use Galaxo myself so can't confirm that).
Note: GAOSP 3 Beta 1 or later nightly doesn't have working camera yet but we're getting there. So if you choose GAOSP and need camera go for GAOSP 2 Beta 3 (based on CM 6 with Froyo aka Android 2.2).
BTW, I'm currently using GAOSP 3 nightly (04052011).
Do they still sell new Galaxy (i7500)???