[Galaxy S I9000 Android Development] gulbrillo:
I am on BUJP8 v9 (full apks) since it was published and wanna give some feedback:

GPS is working OK. Did some car-navigation for different routes, 30 min. tops, and most of the time it was OK. GPS fix is fast. But the antenna pattern of the SGS seems to be quite poor (Hardware problem). It would be much better with a car mount I guess. (and more legal in Germany anyway ;) )

Speed is great. Sill don't feel the need for a lagfix, and I have 50+ extra apks installed. BUT: Some times the system hangs like really bad. I open the dialer and I just get a black screen for 20 sec. or so. Same with chompSMS: notifications are very slow from time to time as well. I could not identify the process which is using up all the CPU resources. But even shutting down the phone does not work while it hangs. I see the S shutdown animation in slow motion and have to remove the battery.

Battery vs. Speed?: The phone was in the car at like 0°C for 2 hours, down to 10% battery. Wanted to place a call. The phone died during the call. I rebooted, it came up with 5%. Everything was slow as hell - some kind of energy saving feature? When the dialer started eventually, I was down to 1% and the battery died after the very first word. As soon as I plugged in a charger, speed was fine again. Beside of this single incident battery lifetime seems to be very nice.

Battery: I do have google push mail and a 2nd IMAP account checking every 15 min. WLAN and GPS activated. Public Transport map updating next trains and buses for my current location every 10 Min. Google weather and news apk updating every 3 hours, Fancy Widget updating every 2 hours, Google Latitude (with amazing indoor precision). Normal use of the phone for Internet, E-Mails, SMS and placed/received 9 calls. Vibration and acoustic feedback, all animations, automatic brightness. Unpluged for 4.5 hours now. Down to 70% battery (display 78%, calls 12%, WLAN 5%, radio 3%, standby 1%). <-- 1% is missing!

This would mean some 15 hours of battery live which would be amazing. On the other hand: During my GPS tests the battery drain was very high. (Now I own a car charger...)

TV out: Works out of the box within the hardware limitations. Somehow very poor color depth but I don't know if that's the phone or the TV having problems interpreting the analog signal.

Call quality: Can't tell. Never asked the other side. But no one complained so far. I'm on original BUJP5 modem.

Camera: Nice. Fast. No crashes. Gallery is OK too but very low resolution. Videos work at 720p, but automatic white balance worked better in v7. Automatic white balance for pictures is working fine. (strange)

Other: Circle Battery mod works as described by Doc, but I had problems integrating smileys and you need to boot the ROM up once before installing the battery.zip with CWM. I tried the extended power menu from a post some couple of sides back but I had the feeling it somehow slowed things down. I'm back to ASOP lockscreen theme now. Samsung keyboad was very(!) slow. Swype v7.6 one is fine.

Quadrant: I don't think Quadrant can tell how snappy your phone is. I am down to 928 (2nd run 996) coming from over 1300 with lagfixed v7, but it is very(!) OK as it is right now.

Question: Is it worth lagfixing v8? What about battery lifetime? Any other downsides?