bstar421,

Your site seems to run very fast using MT servers and the tweaks you've made. Good choice. Just one observation - from my location - Florida - it seems you have some lag in the DNS lookup. Not sure if this is something you can fix or not but I did notice a substantial lag in loading your site the first time.

I highly recommend Magento, I've been using it since version 0.8 and they have made significant performance updates since then. The only other cart platform I would recommend at this time is Joomla with VirtueMart.