Population Aged 20-34 Boise - 24.83% Austin - 33.75% Average Temperature (July/January/Yearly) Austin - (84.8/48.8/68.6) Boise - (74.0/29.0/50.9) Music Austin - ACL, SxSW, huge local music scene and always on tour schedules Boise - ummm, they get some big acts occasionally Outdoors Austin - accessible, if not crowded state parks, lots of bike trails, springs, pools, reservoirs Boise - elevation, national parks and forests, some of the best hunting in the lower 48, skiing, snowmobiling, backpacking For your preferences I would go with Austin easily. I've been to Austin once and had a great time. It's the place to be if you're single and enjoy music. That said, I've lived in Montana most of my life and been to Boise enough that it would be hard to pry me away from the outdoor activities. I know you've done Georgia to Maine, GAME and the backpacking opportunities in the northern Rockies are incredible. I've never been a big city person, and I love the mountains so the choice is easy for me.