Looking for advice on evo vs epic

[thegameksk]

I am planning on getting one of these phones next week. I have a few questions:

1) How bad is the GPS on the Epic and do we know when it will be fixed?

2) I have heard that HTC sense works extremely better compared to whats on the Epic. How bad is it on the Epic and can it be changed?

3) When will Epic be getting Froyo?

4) I have heard that the Epic is extremely buggy. Has this happened to anyone and if you had to return it did your next Epic have the same issues?

5) I know Samsung hasnt always did a great job of supporting and updating their devices. Is this also true for the Epic or have they gone on record and said they are planning timely updates? Ive had HTC phones and know they are always being supported and updated. This is a key issue for me.

Thanks guys any help you can provide is greatly appreciated.