Welcome omg,
Thank you for a very detail and specific question. Also, you saved us a lot of energy by test riding the bikes before asking question. well done.

now, I will join the pack and recommend the Rockhopper. I could not find out what type of fork the Crosstrails use. But, the fork on the Rockhopper is pretty nice, it has preload adjustment and lockout. It may make your road/trail ride more comfortable and less energy intensive. Rockhopper's frame and Fork should also be better on the trails and for your BMX stuff, especially if you are a larger rider.

you have mentioned a certain points about the Crosstrails. I am assuming that you liked those features. Lets see if I can address some of those....

29" wheel..... would not make a huge difference compared to the 26"

Slick Tires.....get light weight slick tires for the Rockhopper and this will be as fast as the Crosstrail

Bigger ring for the Crankset.......Rockhoppers crank rings are replacable. so you can take out the larger 42 teeth ring and get a 44/48 teeth ring.....

with the difference (Crosstrail price - base rockhopper price), about $150 you could even get a lighter Crankset and cockpit (stem, handlebar, and seatpost).......this would save you some weight and make your bike more efficient. heck, you could even get a lighter wheelset for that money.....

so, yes....rockhopper is my pick for you.........But, the Crosstrail would be the pick for a lighter rider witout BMX background..... hope this helps...