Ok, so now my feelings about the device.
First of all, it feels strange to be holding a Blackberry that feels like a phone, I am so used to the 7230 that this was quite surprising.
The look and feel of the UI is pretty much the same in it's basic elements as most other RIM devices, anyone that has owned one in the past will be able to navigate the 7100 fairly quickly. The main differences are in the cosmetic arena, it's more colorful, it's got nicer icons etc.
It DOES feel slower, every now and then you wodner whether you pushed the right button as it doesn't react (nor will it show an hourglass). An example is when it's changing theme, that takes around 5-10 seconds, and while you wait you don't see any feedback.
The screen is amazing, quite simply the best I have ever seen on a phone. It's large, bright and produces very crisp images, until you are outside. Out in the sun the display really loses it's touch, it's hard to read and is a real dissapointment.
Sound quality on the phone is not as loud as it could be, I am used to really loud conversations on my 7230 but the outside noise downtown today made a conversation nearly impossible.
I bonded the 7100 with my SonyEricsson HBH-60 headset and that worked flawlessly, it has a limited Bluetooth implementation, but at least one that seems to work.
The IM client is a dissapointment, I tried connecting, but after seeing "connecting" for over 5 minutes I gave up and went back to the main menu.
The keyboard takes a lot of getting used to. Initially I treated it like a regular phone keypad and couldn't find the letters, then I slowly started to get the hang of it, RIM most certainly has a winner with SureType and I am sure we will be seeing that on other phones in the future as it makes T9 look silly
I'll write more tomorrow but in short:
Build quality (it looks and feels like a good sturdy device)
Ringtones (loud and musical)
Keyboard (after an hour or so...)