Background (FWIW): Heavy game and media geek. Currently use rooted G1 and have used Android for thirteen months now.
1. Sweet and responsive display
2. Freaky fast, for the most part
3. Verizon 3G is AWESOME in Kentucky (not really Droid related but still worth saying)
4. Great build quality
5. Android 2.0 works great with Droid
6. Compared to the G1, I was able to install all of my apps PLUS ones I had to remove due to running out of space and STILL had 204 megs free. For Android, this is VERY nice. G1 is weak for app space and operational memory.
7. Great and loud speaker
8. New Navigator & Maps works great
1. SD card blocked by battery is very annoying
2. Sound quality and volume through 3.5 jack is noticeably weaker compared to G1. This surprised me, since G1 needs an adapter for 3.5 jack.
3. Droid has minimal video drivers, based on lower res non-native widescreen movies have borders around them and is very picky on what MP4's will play (virtually no scaling). This means decoding movies to native res, which takes up a lot of space on the 16gb card. It would have been better if the sd card could be removed without removing the battery. Then you could have a card just with movies and simple to replace.
4. D-pad is only 4-way so is useless for most tasks- especially games. Also forces stretching of the right thumb for testing. This gets old quickly.
5. Keyboard is inferior to the G1's. I never thought I would think that, but it gets tiring typing on the Droid KB and easy to hit wrong letters unless you have small fingers.
6. Not a world phone
I also pre-ordered the Nokia N900. Advantages over Droid (both have same chipset)
1. 32GB of class 6 memory built in plus micro sd slot that does not require battery removal.
2. FM receiver and transmitter
3. More efficient OS
4. Better sound quality through 3.5 mm jack (even better than G1)
5. Video playback up to native res with full aspect scaling for Xvid, Divx, Mp4, Wmv, Mpeg, Mpeg2 and FLV. No need to re-encode videos.
6. SIM card, so can use overseas (I go to England, but not really enough for this to be too much of an issue)
7. Ir transmitter
8. Though resistive screen, the newest firmware makes it very responsive for finger touch, plus stylus is handy for handwriting apps or Flash games that require mouse functions.
9. Already has full Flash, so no need to wait eight more months (at least). Flash games and standard res videos play fine from almost all sites. Hulu is one that does not, but that chokes fast netbooks too.
Though T-Mobile sucks where I live compared to Verizon, the N900 is a much better device based on features and function. Still ,if the N900 was sold by Verizon, I would drop T-Mobile in an instant. Verizon 3G rocks!!!!
When Flash 10.1 comes out, Droid will be even better and since it has a DSP, Flash should work great. Flash will NOT work too good on the G1 (if at all) or the Cliq, Hero, MyTouch, etc- because none of those devices have a DSP. Droid will RULE Android when Flash is released.