i am looking at the infinity center channels for my speaker system. there are 2 models available to me, the entra and the entra two. the differences are that the entra one is a bass-reflex cabinet, has a freq response of 95-20k, sensitivity 89db, and handles 125w. it uses dual 4" woofers. for $100 more, the entra two offers dual 5.25" woofers, a sealed cabinet, freq response of 80-20k (only 15hz lower than the entra one), sensitivity 90db (only 1db higher) and handles 150w. for the price, im looking at going with just the entra one, but should i really consider spending the extra money for those differences?