I currently own the PMDG 737-700NG, and I was wondering if the 800 upgrade is worth it?  In terms of performance and personal preference and stuff, Id normally just fly the 700, but I heard the 800 upgrade does a number of improvements on the instrument panels and more for the ole 700 and 600 as well.  What other things can it do?

I have all PMDG products...see sig....and I must say...it's possibly the best amount of cash that I used....PMDG Rules 8) 8)