Smallmouth are my favorite species, and I've fished primarily smallmouth waters here in Michigan since I started fly fishing in 1996. The smallmouth I fish for here top out around 18-20 inches, or 3-4 pounds. I've used everything from a 9' 5 wt. to a 9' 8 wt. I've finally settled on two favorites, both 9-footers. One is a 6 wt., the other is a 7. Both are moderate-fast action. These are both rods that I built myself (although one has a sweet custom grip made by our own Steeldrifter ) on Pacific Bay Quickline series blanks. The Orvis Clearwaters are great rods and well worth the money, especially if you've found some on sale.
My current 6 wt. line is the Scientific Anglers "Sharkskin" line--I would never have paid the full retail price for it, but I got it on clearance and I have to say it's been one of my favorite lines ever. My 7 wt. line is a WF Cabela's "Prestige Plus", which the salesperson at Cabela's told me was made by Scientific Anglers. It, too, has been a great performer.
My preferred bass leader these days is a 7 1/2 foot, 2x leader, to which I add a foot of 3x. Cabela's used to sell a series of bass leaders under their own brand that were 6 feet long and tapered to either 10 or 8 pound tippets. They were my all time favorite bass leader, but they don't sell them anymore.
I have three smallmouth fly boxes. One is all woolly bugger variations, from simple, unweighted ones to variants with tungsten beads and rubber legs. One doubles as my trout streamer box, and it contains all manner of streamers in sizes 2-6. The third one is all floating bugs; some poppers, but mostly sliders, mostly deer hair but some cork and foam as well. This coming season, I plan to try some streamers with the silicone twisty-tails, and also some with the ultrasuede baitfish tails.
Have fun getting back into the smallies--I know I'm really looking forward to it myself.