More features announced for 2K7 to help you choose:
http://news.teamxbox.com/xbox/11699/2K-Announces-Features-for-NHL-2K7/
[quote name='Team Xbox']NHL 2K7 brings all of the intensity and excitement of team rivalries, with the new
Rivalry System. In the Rivalry System, the season calendar helps players track their rivals and when they play them.
As the season progresses, rivals can change depending on how the teams play against each other and the outcome of the games. A rivalry can increase, for example, if two teams have a set of particularly aggressive games, or if they face each other in repeated playoff series. Additionally, teams not originally listed as rivals can become rivals based on these various events. This dynamic Rivalry System adds a new level of drama when experiencing Franchise mode in NHL 2K7.[/quote]
[quote name='Team Xbox']New to NHL 2K7 is a completely overhauled skating engine that delivers silky, smooth animations at
60 frames-per-second, adding a realistic look and feel to the game. Players now
lean and crossover during turns as well as deftly transition from forward to backward skating, enhancing the visual experience and also adding the ability to better position players for passes and offensive opportunities.
More checking variations improve contact along the boards and in open ice while innovative Right Analog controls offer fully analog stick movement, giving players the power to decide where they want to move the stick, unlike any other hockey video game available. Other franchise favorites include deke moves, fully analog defensive stick maneuvers, revamped puck physics and rebounds, adding up to the finest NHL video game experience on any console.[/quote]
Seems like some nice improvements, I'd still keep my money on the 2K7 side.