I have played it the same after receiving 3 weeks ago Android ICS, so I can not say anything to Android 2.3. Internet works in HSDPA really fast (because of 5s wait until page is loaded; as described in some tests), it is a joy to watch HD videos, there was not yet a crash. Everything runs smoothly absolutely. The only drawback is the battery consumption: As mentioned in a review PolarCell battery with 2000mAh buy for less money, then you get through the day.
Absolute buy recommendation!