E55
I bought this a week ago and it is fantastic (previously a E51 user). The call quality is brilliant, but I haven't had the chance to use it in crowded noisy places like Oxford Street yet. Used PC Suite to sync my Outlook data with it - no problem despite having hundreds of contacts. Nothing seems to be out of sync.
The keypad is briliant. Took me less than a couple of hours to get used to it. By the next day I am already typing faster in comparison to a normal T9 keypad.
Screen is clear and readable. QVGA is a disappointment, but S60v3 is pretty good at taking advantage of the small screen in comparison to my old Win Mob phone.
Built quality is excellent as usual, though it is still a clear downgrade compared to the stainless steel equipped E51/E71. Personally I wouldn't mind a thicker/heavier phone if it has stainless steel. So clearly not as indestructable as the E51, but still better than 99% of phones out there.
Camera is ok, but couldn't care about it much. Would have been great if it has macro mode. Taking pictures of documents and business cards would have been easier that way.
The phone is also incredibly fast. The processor may be based on an outdated technology, but it doesn't show here. The E51 was already a quick phone, but can slow down in certain areas like multimedia and web browsing, but here everything is quick thanks to FP2 and the 600Mhz processor. Web browsing is a delight and opening Maps 3.0 is near instantanious. No slowdowns in other apps like Viewranger and gallery.
Battery life is great too. About an hour of talktime, an hour of WiFi, couple of tens of SMS and e-mails and two hours of music playback a day and the battery indicator only dropped by a bar.
If there is a downside to the E55, is that the E72 will be out next month. Advice is to wait until the first price drop as I do not think it is worth £275, especially when the E72 will retail for a bargain £330.