Had mine for just over a week, abit strange after having an LG Viewty with touch screen. I would have got the NEW Omnia HD that has just been realised with the HD touch screen and 8mp cam but this (C905) was offered a free upgrade, I have had a W810 and W880i in the past so was happy to own another SE.
The bad-The keys are small, the bottom left side has an annoying piece of metal sticking out to attach a strap, the slider feels a little cheap.
The good- It's easy to use, I like the predictive text on this phone, it's easy to mod, has great camera and good/ friendly overall usability. The WIFI is a plus. If you can get it on a 12 month contact like I have for £20 a month then go for it. I would not buy it sim free as it is alot of money. Almost £500 here in the UK.