Reply to Akai APC40 and Traktor 2.5

Hello djranking s community ! I have an Akai Apc40 that I recently picked up and i have mapped out to work with traktor(thanx to collision for the awesome mapping). I have been looking at picking up an external soundcard to use. I was looking at getting a Traktor Audio 10. But, I was wondering if there is a better and/or cheaper alternative to the Traktor Audio 10. Any suggestions/help is greatly appreciated