Thanks for all the tips guys. I've decided to get the Simms guide boots (felt soles). They fit my foot better than the Freestones and other boots I tried on. And, according to the staff most of whom have tried all the Simms boots and other boots they stock, the Guides are the way to go, the warmest, although they're a bit heavy (doesn't bother me).
I'm wondering, should I go with the size 10 or 11? I wear a 9.5 street shoe. I'm leaning towards the 10 as it fit fine with my waders on and a regular sock. I'm going to go back and try them on once more with what I usually wear which is a liner sock and a heavy wool sock.
On a related note...I had a spey lesson yesterday and was standing in the water for 2-3 hours at a time (between shore breaks to pee, eat, etc). My feet F-R-O-Z-E. I normally don't stand it in the water in the winter for this long and this is why. Maybe it would have helped if we weren't standing stationary for so long. I had my thin liner socks on and heavy wools over. I also had "little hottie" adhesive toe warmers on the top of each foot between the liner and wool sock. The warmer pack definitely heated up in my boot before entering the water, but once in the water it didn't seem to do a damn thing. Anyone have any tips? I know Simms etc makes a wading sock...worth the $30? Perhaps my new boots will make a difference over the crap Cabela's ones I currently have