I've been in all three! I'd recommend them in this order of preference:
1: Kearsarge to Whitney (only if you've never done this). The feeling you get dropping into Vidette Meadow feels like descending into some fantasy realm. Whitney is iconic, Forester is iconic, the KKD is scenic, Bubbs Creek is worth the price of admission alone. I've been that way 2-3 times, and Whitney 7 times so I'm slightly "over" this route.
2: Evo Valley. The prettiest of the three, I recommend the first (K-w)only because of the classic nature. Evolution basin is gorgeous, and Muir Pass is a perfect blend of esoteric and iconic. LeConte Canyon is like a smaller hidden Yosemite in my opinion.
3: Rae Lakes. Ive only been on the loop from Woods Creek to Vidette Meadow (when I did the JMT). They are pretty, but the bugs are bad the path is clogged.
Mosquitoes are worst in June/July. They begin to go dormant in mid August and are gone by late Aug and early September.
Personal note: I've just decided to do the JMT again this year (between 8/13-9/5). It'd be really cool to run into you if our paths overlap this summer!
Last edited by Snacking Bear; 01/26/16 02:25 PM.