I've been running a VP150 for a over a year with my old JBL bookshelves. It was my weakest link and my easiest way to get into better speakers and sound for a fair price. I watch movies 95% of the time compared to music.
While everyone would suggest getting mains first, I was not willing to wait that long to save up and the WAF approved getting the center. The sound difference hasn't been picked up by anyone who's come over and I get compliments all of the time. I can only easily hear a difference when doing test tones or a really good slow fade across happens...but I also listen for it.
I'm not suggesting to get the center now/first, go for the 50/60's and see how you like them. If you do go outlet you also have a month to save up that extra $$
Hopefully sometime around October I will get my 60's from the outlet. Renovations especially unexpected ones have severly delayed my purchase...:(
