I like the 12/13 set that Phil is collecting, but I'm too late to the show for that set.

I myself am collecting the 13/14 set. I like the clean design of the cards.

I was able to finish the Single SOT set for 13/14 with Beliveau and Gretzky being the tough and expensive ones to get.

The Group A cards in the 13/14 set are Beliveau/Osgood/Fleury/Thornton/Sundin. Group B had Orr/Gretzky as the notable ones. If you expand to the Dual SOTTs, there are some great Duals that year (Gretzky/Messier, Orr/Lidstrom, Roy/Sakic, Fleury/MacInnis)

The 14/15 set is much smaller at only 17 cards this year. Could be easier/cheapest to complete. Only 2 group A's

Really depends on which design you like the most.

I completed the 14-15 SPA SOTT set. With only 17 players it was relatively easy to put together, but the odds for the short print were a little tougher than previous years. Overall nice design, but not a very deep checklist ... I still managed to find a nice triple autos with Gretzky, Lemieux and Messier !

Regarding the 12-13 SPA SOTT, I think I may possibly be the only one crazy enough to put this set together ... It's definitely too late to try putting the set together at this point. Many group A players have never even showed up on EBay (even at the release time!!) ... and I won't tell you how much it cost me to build this set ... I didn't realized at the time how much money I would have to spend to complete this project! Hopefully I can find the last four (4) remaining cards still missing to finally put this set to rest! I plan on displaying the master SOTT set eventually on Instagram.