I've reached my goal of 518/518 and finished my T206 set on Friday. Took me less than 2 years.
Thanks to many board members for cards and a special thanks to Erick Summers for selling me the final card!
I've thought hard about the two St Louis variations and they don't excite me enough to spend the money. Perhaps one day, but not now.
Still scanning cards for my site - only halfway there...
http://www.t206blog.com/518-and-done/
Next projects include Hindu SL subset and a HOF set (all HOFers, not just t206 HOF).