I purchased the clip+ because I was beginning to run out of space on my 2Gb clip. I purchased the 8 Gb Sansa Clip+ and have really enjoyed the extra space. The only real difference is the ability to use expansion cards, which I haven't used yet. If you are running out of room then the clip+ is an inexpensive and very functional route to go. Just know that you don't gain much other than more storage space.
Currently I have a 2GB sansa clip, its works nicely, but I'm finding my self not adding podcasts due to little storage, I like the design of the clip, and am tired of the iPod.
Should I upgrade to the +? Or should I wait for the next version?
Also, if you do think I should switch back to an iPod, please include good facts, my iPod nano 3G recently died, and I just gave up on the shuffle.