I bought a Samsung Galaxy S2 for 2 weeks and I do not regret, everything is perfect. Showing excellent - fast - good quality pictures .... n I personally have no problem with GPS I've tested in comparison to my Tom Tom One and the time to get the signal are identical (variable time according cloud cover ...) At the level of basic app comes with the appliance L'- email makes it very easy to set up different email accounts. The alarm can be set to the day with different hours and pre alarm clock with soft music. Only limitation calculator delivered does not calculate percentages, but there are more efficient downloading on Android market for free, so you only have to replace it.
Only constraint, the unit does many things and in case of heavy use (like + Gps + wifi on web) it consumes, it is better to be equipped with a car charger cigarette lighter to recharge during the day or failure to have a second battery to take 12 hours or more.
Samsung Congratulations !!
The area for improvement: Listed Google, check out Google Android Market for paid apps, very restrictive levels of accepted methods of payment, only takes the CB, no paypal or moneybookers currently.