Epson 3800 vs 4800 - any advice?

[Jon Lybrook <jon@terabear.com>]

I'm considering buying a larger printer.  Does anyone have any opinions 
or recommendations about the quality of the Epson Stylus Pro 4800 vs. 
the 3800?

I understand the 4800 is bigger, heavier, and allows cartridges that 
have a higher capacity, thus saving money on ink (which to me 
compensates for the higher price).

Are there other qualities - particularly with regards to creating 
Digital Negs/Transparencies I should be aware of before purchasing a 
4800 over the 3800?

Thanks!
Jon