Unless you use your phone as a pendrive, I believe 16GB is more than enough. After all, if you did store moview/series in your HD7, yu can only watch it for like 4 hours. I did the battery test :-)

Mozart is said to have better battery life, and is the best WP7 phone to date. The design is well thought and the camera & graphics are very sharp. However, its internal memory is smaller although is said to be expandable, and its slower on EDGE.

If u ask me, ill get mozart as you wont actually need the kickstand, or the big screen. how often do u watch movies on ur phne anyway?

I'm a HD7 usr... I like the Mozart style and grip. Very solid and taking photos is a breeze. One prob with HD7 is the ability to take photos. It's not easy....

Screen is big, but you end up running out of juice less than 8 hours if you are a heavy user. If the battery last longer, and the camera is not so hard to operate, I'd easily recommend HD7.

when you try to snap a photo... you have to press the button extra hard, or you have to press it at a certain way/place. if not, your phtos will be blur. I usually have to take 2-3 shots to get a proper photo. this is a huge problem if you are still very new to the phone, but im guessing if you get use to it.. it will not bug you that much.

its different from the mozart which you feel like you are using a digicam. a simple press, and you have your clear stunning photo...new users will also be able to take ur photo easily as its just a simple press.

I have full confidence in WP7 and that it will mature like Apple iOS4, but HD7's battery is killing me.

Full charge at 630am... normal use with twitting and texting, and it only lasted til 3pm only. If you are on the move, a charger or a back up battery is a must with this phone. Now seeking other windows phone from HTC to replace the HD7. Most probly will sell my HD7 =(

I cant stand the HD7 power drain.. Although I love the UI of WP7, and I do see it having a lot of potential if compared to android, but i think I may want to let go my HD7 for a less power grabbing phone..