I tried Android. Although I was considering it if Meego is not great, I am not so keen on it now. Maemo5 is miles ahead. I have not tried Meego, but sadly I think that it will be more limited than Maemo. More like Android, if you know what I mean. However this is my opinion of course, and Meego might be very appealing after all.
With that said, I don't think there is another mobile on the market that handles videos as great as the N900. It accepts many formats, however nothing over 800x480 in resolution. Standard 699MB-1.5GB avi dvdrips are a piece of cake for the N900. I have never had problems with them. Using Mplayer with sib as frontend and the standard media player I have played some anime in .mkv format with dual audio (eng and jap) and subtitles, and sib plays them well and can switch between audoo streams. However I did have some problems sometimes with .mkv. Usually in seasons. They would be encoded differently from one season to another. So before going out, make sure it plays at least one episode, so you will be able to play them well. But it's still miles ahead the competition when it comes to video playing. And the screen and sound are beautiful too. So if video is important to you, the N900 is the only choice.
Memory is great on the N900. The 32GB onboard is quite fast (so not the cheap slow memory manufactorers sometimes put in the phone). For this Nokia must be commended. There is also support for a microsd with the capacity of 1-32GB, which brings the maximum total to 64GB. The camera is quite good. If your memory card is not fragmented, video recording should be smooth. And with apps such as fcam, it is much more pleasant and exciting to use then on Android. There are also other hardware goodies like the FM receiver and transmitter, IR transmitter etc.
Resistive vs capacitive. It is up to you. I prefer resistive for it's precision. The N900's screen will be less sensitive than a capacitive screen of course. But it is hardly noticeable believe me. Lacking multi touch is a bit of a downside though. But you can use gloves with it and a stylus. This makes drawing much fun especially with apps like myPaint. And you can use the browser without zooming.
The hardware keyboard is much more comfortable than that of the Droid in my opinion. I am posting from the N900 right now (my fingers are getting tired ).
Finally I would suggest that you don't buy the N900 but wait for Meego to see if you like it more, since Maemo5 is practically discontinued. But I do see a future for the N900, at least for a few more months.