If you are going for future value that's tough but I'd probably go for SPA with the hard-signed RC's.
If you want hard-signed RC's with patches and can afford it, I'd wait for Cup, since as a comparison, Dominion will require you to add Anthology updates.
If you are going for a comprehensive record of the league from this year with great pictures, I'd go for Series 1 & 2 as the checklists are much more inclusive and you still get RC's of all the players.
