MDMAlliance on 09 December 2013
I own both, and I kind of don't want to convince you to make a decision you may eventually regret. If you want a 3DS, buy one as well. If you're absolutely sure you don't want the PS Vita and you wont regret selling it, go ahead.
Just a warning: If you use your PS Vita for things other than gaming, you could be disappointed that the 3DS either doesn't do it, or doesn't do it as well.
