Akai S1000 / S1100 samplers

Hi,

Do the effects come standard on the 
S1100?

It seems the standard S1100 had many 
standard features: The only option I 
know of was the digital I/O board.
Were there others?

Also, how does the S1100 O.S. compare 
to the S1000 O.S?  

I mean, there's Version 4.40 for S1000, 
does that also work on the S1100?

I thought the S1100 requires 2.0 ROM upgrade 
for some features like HD recording.  
I'm really confused.  Is there someone who 
knows the details here?

Thanks!