depends on what type of basketball you are looking to play. Live is way more arcade like style. it's gotten a little better but still it's no sim. if you're looking for sim basketball and tough defense then 2k should be better for you. it's not perfect and could use some improvments but 2K has been very active on their message boards and seem to be taking issues into account for their up coming patch. online play is kind of horriable with 2k. this is the reason 2k is taking longer with their patch. I believe the whole online aspect is getting done over.
if you are a franchise player then this is a no contest. 2k has one of the best franchises i have seen in a basketball game in years. interactive messages from NBA.com. your main page with the franchise is like an online NBA.com message page. you can click on each headlines and check out something that goes with the news. Live has the same feature but it's not interactive. this year you can edit rookies throughout the season. so lets say you pay attention to college basketball and would love some certain players in your NBA draft. well you can edit some random CPU made up guy into that player. you can't change the likeness or weight but you can pretty much edit everything else including sneakers and ratings.
also check out this site as they compare 2k to live from 2 differnt points of views. both reviewers came away saying 2k is for sure the better overall game.
http://gamecinemahd.com/article/2008...parison_review
this is the thread i started on this subject. 1 response you might find useful
good NBA Live v.s. 2k9 comparison.
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