peezee

700x23 Michelin Dynamics on my neuvation m28 aero's. Going with Michelin Krylions next.

jwbnyc

Currently running Continental Sport Contact 1.3s on the LHT and Conti GP 4Season 28s on the other Two Bikes. Kojaks and the various Marathon tires are nice too.

It would be nice to see a 26 X 1.35 Marathon Supreme. That would be really useful.

There are on-road situations where a little tread is nice to have. The odd patch of mud, cinder tracks, those piles of sand that accumulate from run-off here and there, particularly in the Summer, to name a few. And then there is the occasional off-road excursion where most would agree tread helps. I like a bit of tread, for general riding in mixed conditions, myself if given a choice.

EKW in DC

I run 700x35 Nashbar Street Wise Road Tires on my hybrid w/ butterfly trekking bar. The tires now have about 2,000 miles on 'em since I put them on in December, mostly on city streets and the DC area's well-traveled MUPs. Tread still in great shape and only one puncture so far. Solid tires for $8 each, which I think is what I paid for them on sale (they're currently on sale for $10), though I think my next set will be some 32mm tires of some sort. I've been thinking about the Michelin Dynamic, which seems like another good all-around tire. Shouldn't need them for a while, though, judging from the current condition of my Nashbars.

Pig_Chaser

I think I'm a convert to Michelin Krylions (700x23c). They flat about as often as gatorskins with the exception that if you do have to change them, you can get them off and on by hand. They have no tread pattern, and look better on my bike.

gholt

Marathon + on Mavic open pro sport, ultegra hub.

modernjess

Conti Ultra Gator skins. 25cm at 110 psi. They have been very very durable and the riding and handleing characteristics are quite good. Last set I had I rode to the cords before I got a flat. Admittedly there is luck involved in that track record.

d2create

I pretty much only use Panaracer tires.
My choices are more limited due to my wheel size being 650b, but I have no complaints about these tires. Good traction, supple ride, fast, and pretty bomb proof. Thousands of miles and can't remember the last time i flatted. I'm also a fan of using mr tuffy tire strips, but it's been so long since I've removed a tire, I can't even remember if I'm still using them.
I've used their Pasela TourGuards and I'm currently running the Nifty Swifty with the herringbone pattern tread.