I also never thought I would find a N900 replacement until I got the Galaxy Note and it's the closest thing to a perfect phone right now on the market for uber geeks who want everything in a phone.

5.3" Super AMOLED HD (1280x800)
Capacitive touch + passive stylus digitizer (Wacom based)
1.4GHz Exynos SoC. (I'm running mine at 1.6Ghz rock stable)
Supports 64GB Micro SDXC card.
Can read/write NTFS. (>4GB files e.g MKV videos)
VNC, VPN, USB OTG, full native USB or BT mouse/keyboard support, HDMI out etc.
Also has user replaceable 2600mAH battery. (nearly 50% more talk time than iPhone4s or N9 according to gsmarena battery test)
ICS upgrade by Samsung in Q1 2012.
Plays practically every video container/codec combo on the internets.
Super loud/clear earpiece speaker for phone calls.
Better WiFi reception than my N900.

Oh, and the gazillion number of apps pretty much allows you to have every function/feature you ever wanted or was used to on the N900. (heck, it's even more customizable than the N900)

Anyways, I got used to the size after a day and now I don't think I can ever go back to a smaller sized phone.
Until something more radical comes out, I truly believe there is no better phone on the market than this little, errr, humongous beauty.

btw, N900's hardware keyboard is AWESOME. I've owned the E7 as well and it just doesn't compare to the N900 in terms of comfort even though E7 has bigger button layout. It's due to the hard gaps between the keys on the E7 it seems. N900 is so much more comfortable IMO to type. Also, the OS doesn't do the HW keyboard justice on the E7. It just doesn't compare to the amazing N900 + Maemo5. Galaxy Note doesn't have a hw keyboard but I prefer it to the E7. Swype is actually pretty cool if you get used to it and is less prone for errors and is faster to type. But yeah, it's no N900. But nothing is.

This video of it gives you a good rundown of what you can expect:
http://www.youtube.com/watch?v=2JyfrD4VrHY