It depends what you're looking for. The Cornhusker would be my last choice, but if you're hoity-toity and enjoy the week's stock reports from the Wall Street Journal delivered to your room with your full non-complimentary and very expensive room-service breakfast, then that's the place for you. Expect to be called, "Buffy" or "Champ" or "Your Heiness".
Both the Holiday Inn and Embassy Suites are in a great location, both have in-hotel bars, good bars close to them.
You'll be more prone to see families with kids at the Holiday Inn. But the Holiday Inn is sooo close to great restaurants in the Haymarket and plenty of drink possibilities, including Barry's, Jack's, Old Chicago, etc.
Embassy Suites also is pretty close to the Haymarket, only a block or two further from the Holiday Inn. The advantage of the ES is that it is closer to the downtown bar scene, if that is your fancy. Cliff's, WC's, Sandy's, etc. is an easy walk to (and the walk back varies, depending upon the inebriation level :cheers )
Most importantly, all three are EASY walking distance to the greatest facility in Nebraska! (no, not Starbuck's, and not the Roller-skating museum) and that is Memorial Stadium! :thumbs
Book early, and you can't go wrong. Friday and Game night will be magic (P.S. Sidetracks the night before game is a no-brainer) no matter what you choose, and no matter how bad NU beats UT.
Congrats on the tix, enjoy your stay, and Fops here will buy ya a beer if he's still conscious