Cranking down the backlight seems to have a HUGE effect on the battery life for me.
Overall I'm finding the N1 feels much more web-integrated than the iPhone, though in fairness I've never owned an iPhone. This phone is meant to have a data plan. If you don't have one you need to be somewhere with WiFi most of the time.
The more you use your Google account the more you'll get out of this device. As a full on Google user I get a lot of value from this. My Gmail emails are delivered directly to the phone (through data/WiFi of course) and give alerts like text messages, and I have full control in a way that standard email clients on other phones simply don't provide (i.e. archiving rather than deleting).
When I first logged in the phone automatically downloaded my preset Google contacts including any information I had already added to them (like phone numbers or addresses). When I first logged into facebook it offered to sync my contacts and supplemented my Google contacts with things like birthdays and display pictures and put a direct link to facebook profiles in their contact info.
When I select a contact (depending on the info I have for them) I can send them a text, call them, email them, view their facebook profile, or map to their address. When I map to them I can use the internal GPS to get directions to their address. Likewise when I Google search a business I can get directions from my current location with a single click.
I haven't even begun to understand all that I can do with Buzz, and Google has said they are working on a Google Docs app (no timeline yet though). The Google voice integration looks slick, and I really, really hope it comes to Canada soon. I'm not sure how much of this is available on other Android phones, (I would imagine most of it) but I wholeheartedly endorse the N1.
I do have a couple of minor gripes however. Firstly the text messaging system could certainly be better, I'll probably try Handcent soon. Secondly I can't find any way to disable roaming. You can disable roaming data use, but the N1 will sometimes switch to the Rogers Edge network and then stay there even when I go back into a Wind Home Zone. I'd like to lock out Wind Away but it doesn't look like I can in Android.
I'll also comment on Wind's service. I've found their coverage in downtown Toronto to be very good, even inside buildings. Notably I have strong signals inside the lower levels of Union Station and the Air Canada Centre. In Scarborough coverage is much more spotty. While coverage on my campus (UofT Scarborough) is actually better than I got on Bell/Virgin's CDMA network I don't get signal anywhere in my house, which is a major inconvenience, and when I'm driving I've dropped signal regularly. Wind has a tool to report dropped calls and poor signal which I've been using regularly, so it will be interesting to see how long before that's remedied. Of course Google Voice support would make coverage in my house irrelevant since that would work over my WiFi...
The Wind reps have been polite and helpful, though obviously inexperienced. The first store I brought my N1 to had never activated an unlocked phone and didn't know how to set up the data. Still, they all seemed like pretty sharp people so I attribute this to inexperience rather than incompetence. I think they'll get much better quickly.
My only other issue has been porting my number from Virgin to Wind. The process has failed twice and the Wind reps I've talked to don't seem to know why. Still, they listen when I talk and endeavour to actually answer my questions honestly. The issue has also been progressively elevated and I have yet to be asked to do the same thing twice, something that drove me nuts about Bell/Virgin. Overall, though there have been hiccups if you expect those hiccups going in I think you'll be pleased. They are not yet Bell/Telus/Rogers, which is both good and bad.
Still, if Mobilicity impresses I wouldn't rule out porting.