I use Mobil 1 Racing 2T at 32:1 premix on all of my two stroke engines. No smoke, and excellent Mobil 1 lubrication. I hear that they don't make it any more though, but I've got a few quarts left.
A mower repair guy said that he uses Mercury outboard oil on all of his equipment, and that even though it is formulated for water cooled engines, a trimmer or blower would not suffer. He does not recommend using TC-W oils on high revving dirt bikes, snowmobiles and even some water cooled personal water craft. I used outboard oil for a long time because I had a boat at the time, and my blower and trimmer did suffer from clogged exhaust ports after several years. The synthetic stuff leaves very little carbon deposits and virtually no smoke. I guess when my stock of Mobil 1 is depleted, I need to find another synthetic 2 stroke lube.