HTC Hero :: Does Hero Have App Limit Like IPhone Or Pre?

I'm considering to switch to Hero from Pre. Pre is a really nice phone with the excellent webos system. But many small bugs, lag, freezing up just ****ed me off.Before I make the switch, I want to make sure Hero is as good as what I heard:

1. Hero only has <300M ROM and RAM, how does this handle the future O/S updates and mult-running apps?

2. Does Hero have an app limit like Iphone or Pre? LIke how many apps you can get at most, or you can get apps up to ***Mb?

3. I heard Hero doesn't allow to store downloaded apps to the microSD card, which leads to another similar quesiton, with the <300M memory, there will be a small room for applications.

4. Can you use Hero as a USB drive to drag and drop files(mp3, video, pictures, documents) to Hero from the computer? When you send an email from Hero, can you attach the files that you copied to the Hero even though Hero can't read the file(say some strange format file)? I know Pre can do this.

5. Can you create as many pictures folders as you want on Hero when you copying pictures from your computer so you can see pictures in different folders on Hero to better browse? I heard you can't create different photo folders on Hero and all photo are stored in one folder which is very crowded and hard to browse. Same question for mp3 / video folders.

6. Is it true that you don't know which app is running at background or which app is closed by Hero? Is there a limit on how many apps you can open at the same time? Is it easy to switch between them, (like pre)?

7. Can the battery last more than a day with moderate to heavy use? I heard it's way better than Pre battery.