My take on the away stadiums I've seen Iowa play at:
tOSU--best environment in the Big-10 for sure if not the nation. Heiney Gate rocks. Been there twice...for the infamous 31-6 rout and last year. Take Kinnick and add 35% more people...LOTS of red. Fans were gracious.
Illinois--been there more than any other away venue other than NW. Seen the Hawks win and lose, win and lose. Town sucks, stadium is OK...student section is best in Big-10. Fans weren't rude (surprisingly).
MSU--went there last year for my first time. Stadium is OK...huge campus...student section very active. Nice drive from Chicago. Very little tailgating. Fans were decent.
NW--my fave away venue regarding watchability...seen 8 games there. Decent food, seats are all decent...seen losses and wins (saw the one-point loss in 07 and saw Chuck Long toss 6 TDs there in 85).
Purdue...ugh...sterile environment around the stadium. Not much tailgating. Rude fans. Hate going there....but did see Long beat Everett in 85.
Bloomington....worst FB atmosphere in the Big-10. Small stadium...not much fan action...seen Iowa both lose and win there. The BB stadiums looms over the FB stadium....you can feel Knight watching from in there somewhere.
Minnesota...ugh...indoors....only thing good was the plethora of Iowa fans. Went once...Iowa won.
Wisconsin...been there twice....saw Iowa win twice. Only a tick behind Columbus for a rockin good time. Say what you want....they can party in Mad-town.
Cyclone stadium...went there once as a kid...watched ISU lose to Colorado. Never been back...nuff said.
Sun Devil Stadium....watched Iowa get spanked 44-7. Unique stadium built into rocks...lots of Hawk fans.
Orlando...pitiful stadium in the middle of a ghetto (literally)...dirty, run down...ugh. Orlando...not much there that interested me.
Tampa...best venue for a bowl game I've been to...on the water, clean, cold beer....chicks everywhere....been there 3x....two Hawk wins and one loss.
JAX...overrated....actually cold in the winter...not much nightlife when I was there in 83.
Folsom field....Boulder rocks...town parties....great backdrop to the stadium...(never saw Iowa play there becuz they haven't, but have seen ISU play there twice)