Flyred- I recently had the opportunity to cast the Scott f2 6'6 3wt.
All i can say.....I am in love....It will be my next small stream stick. Butter smooth. I am primarily a small stream, dry fly type. So this rod fits me well.
With that being said, i am not sure its a great fit for a medium sized stream...but, i am sure a smallmouth would be a BLAST on it.
I like a slower rod though...fast graphite rods are not my thing, unless on a tailwater.
From what i can remember...i think the scotts go to an 8ft 5 wt.
Either way...i would cast before i purchased.
Hope this helps