I currently use a Nokia N900, a Nokia N9, and (occassionally) a Nokia 808.

The Nokia N800 was the device that brought me into the maemo community. I had it tethered to a Sony Ericsson K550i. The K550i was my first unlocked, unsubsidized phone.

I am now on my third N900--I still find that the N900 fulfills my needs better than any other mobile device, so I still use it almost every day. However, I will be honest and also say that the N900 is very much a "jack of all trades but master of none", especially as we approach 2015. Thus, I will also use a Nokia N9 or a Nokia 808 depending on the situation. I do hope that the Neo900 will breathe more life into that N900 form factor with nicer hardware and some more developer interest.

Relatedly, I also have an OpenPandora and run a Debian-based OS (SolydX) on my laptop. So I have some familiarity with the goings-on with other communities/platforms that might be of interest to our community.