vistana resort is closer to wdw.
villages is newer overall. it's more in-between wdw and universal in location.
vistana resort interiors have been refurbished in the last few years, so i don't think there's a giant quality disparity either way.
primarily due to location, i've stayed at SVR twice in the last 3 years and i had great experiences.
vistana resort discussion is here:
http://disboards.com/threads/the-sheraton-vistana-resort-thread.3148502/
villages thread is here:
http://disboards.com/threads/sheraton-vistana-villages-your-reviews-tips-ratings.2854036/