Specs are a good starting point for your evaluation of which product to purchase but the acid test is how the unit sounds in your setup. Try them both and if there's not enough improvment in sound quality to justify the additional cost go with the less expensive equipment. I noticed ZVOX has a 30 day home trial, same as Outlaw, although you may be out the shipping cost of the unit you don't keep.

If you do the evaluation please post your impressions. I'd be interested in hearing them.