[EyeB]

one thing that hasn't been mentioned yet is an extended battery, slim ones fit with the original backcover so it doesn't make phone thicker

I bought 2 from chichitec that work well, they are the 1900 mAh slim battery, a little expensive maybe :S i think it cost me a little under $30 for 2 of them with the wall charger but I'm happy with them. The one works well enough to get me 2 full days on a single charge with a little left but I charge it so I can get through 3rd day. If you decide to go with this battery, use the code OFF10 for 10% off purchase. (Yeah, it's a free ad for them, but I do like the battery lol)