Buy or Not? Bundle Stars Indie Jam 1 and 3

I'm having a little trouble deciding whether I should buy Bundle Stars' Indie Jam and/or Indie Jam 3 bundles, so I thought I'd ask here for advice. So here's are some info and my questions:

1) Indie Jam is currently listed at $2.50 for 10 games -- good deal, but I already own 7 of them. I'm only missing Dead Horde, Future Wars, and Unstoppable Gorg. I'm not big on tower defense (Unstoppable Gorg) or strategy (Future Wars), but the occasional shooter (Dead Horde) is OK. Would it be worth the $2.50 for these three games? (I know I'll have extra keys for the other 7, but I generally base my buying decisions only on what I'm missing in cases like this.)

2) Indie Jam 3 is a better deal for me overall, since it's slightly more than $5 for 10 games (which includes 1 not yet unlocked), 9 on Steam, and I only own 2 of them (Dear Esther and Sanctum). The ones I'm missing have decent MetaCritic scores, mostly 70-ish, but nothing exactly stands out as something I think is particularly interesting or really want. So what about this, are the games here good enough to be worth a purchase? Maybe I should hold off on this and see if it goes for half-off near the end of the sale, like Indie Jam is now?

I know everyone's individual tastes are different, so what you may like I may not and vice versa. But I figure if enough people here have played these games, they can give me a general sense of whether they're good or not, which can help me decide. Thanks in advance!