It bothers me when people assume any name brand speaker is good - re: Bose. I've listened to a few Infinity speakers (they were coaxials) and hated them - no midrange at all and harsh exaggerated treble. Honestly, I don't know if Infinity speakers have improved since. Their home speakers don't do it for me either.
I have Polk MOMO 6.5" components in my SS and they're spectacular. You can probably score a pair off eBay for around the same price. I've also owned a pair of the older blue coned style Alpine Type R components. They were budget components back then and really good for the price.
Like lashlee said, listen to as many different models as you can through the same amp and head unit to get an idea of what you want.