Restore from backup vs. Set up as new phone?

[unconned]

So I heard that you shouldn't restore last generation's backup to the new phone, does it really matter? I already restored my 3gs' backup to my 4s, any way to reverse that?

Thanks

 

[FreakinEurekan]

Restoring is the only way to go IMO. But if you want to wipe out & start from scratch, you can do that in iTunes.

 

[andyblila]

I would recommend setting it up as a new phone. Any errors that are on the old one, which are inevitable, will go away.

 

[asleep]

Okay, I'm just getting around to activating my iPhone 4s.

I have iOS5 on my current iPhone 4.

Can someone clarify or link me to exactly what information I'd lose setting up my new iPhone 4S as new?

What disadvantage is there to restoring from my old iPhone's setup? Are the hidden errors/glitches on the old phone?

Just trying to get a good pros/cons list for this, thanks.