This is a little off from your question but is 2K6 or 2K7 as fun as 2K8? I'm thinking of buying an older version used to save money. They cost like $9-$12 at GameStop.
I bought NBA Live 06 for $6 yesterday and will be returning it tomorrow to replace it. That game sucks d***! The worst BB game I've ever played. I'm never getting NBA Live again for Xbox 360.