I haven't seen Micronesia's pre-merge (not sure why I started with the merge), but nevertheless I am going to give a devil's advocate case as to why you should all change your minds.

Guatemala:
Rate the season 1-10 on the winner: 6. Danni was low-key on the show so I can't rank her any higher, but she played a strong game by de facto leading her pre-merge tribes and infiltrating the majority at the merge, and since the story of how Danni won the season is really the second-ever example of the edit being about how the runner-up lost (first ever was Boston Rob), may I just say that Stephenie's season-long heel turn was EPIC.
Rate the season 1-10 on entertainment: 8. Jamie vs. Bobby Jon. Stephenie vs. Bobby Jon. Stephenie vs. her alliance. Gary Hogeboom vs. Gary Hawkins. Amy vs. her leg. Cindy vs. other people's cars. Conflict everywhere you turn!
Rate the season 1-10 on the cast overall: 8. Stephenie, Judd, Amy, and Gary are all top-tier, and Lydia, Rafe, Jamie, Brian, and Margaret are all close behind. Almost everyone has a part to play.
Rate the season 1-10 on gameplay: 6. Dictated mostly by the suspiciously-timed swap for most of the game, but there were a lot of interesting little plays being made, even if they didn't really add up to big ones.
BONUS
Rate the season 1-10 on the location: 8. MAJOR points for the Mayan temple, minor deduction for having a big-ass lake they couldn't actually safely swim in. This was corrected for by the ridiculawesome cage/hot tub contraption that was one of the rewards.
Rate the season 1-10 on the challenges: 9. They ran with the Mayan theme in a way that was pretty much perfect.

Micronesia:
Rate the season 1-10 on the winner: 4. CIRIE WAS ROBBED.
Rate the season 1-10 on entertainment: 8. It has a LOT of individual moments that stand out, but I felt like the glue that held them together was lacking. Characters would just sometimes pop up out of nowhere for being threats all of a sudden
Rate the season 1-10 on the cast overall: 7. Good returnees, questionable fans. (Can you imagine if Shirin would have made it into the fans instead of having to wait until Worlds Apart? That would have been incredible.)
Rate the season 1-10 on gameplay: 8. A lot happens per episode, but it's hampered by falling into a pattern (nearly every merge episode, someone is the target, but they stupidly exile them so they can find the idol, and then it comes down to whether or not they play it) and the fact that the various medevacs and quits did more to clear the path for the Black Widows than anything else.
BONUS
Rate the season 1-10 on the location: 10. Palau is beautiful, and the Tribal Council set is one of my all-time favorites.
Rate the season 1-10 on the challenges: 8. A good mix of the creative and new and the iconic and time-tested.