I too have an old Skil that won't die, but with a good thin kerf blade
(see below), it cuts just fine. If I were in the market for a new
saw, I'd strongly consider one of the smaller corded models - like the
Skil 1155 or the PC 345 (and the PC 314 Morris mentioned looks very
nice too). I find that most of the cutting I do is in material less
than ~1.5" thick, and the lighter weight would be a nice benefit and
possibly even a safety feature (it would reduce fatigue, and maybe you
wouldn't accidentally trip the trigger on a smaller lighter saw?).
As far as trigger/safety designs, I'll second the recommendation to
try out as many models as you can locally, or order online but be
prepared to make a return if you're not completely happy. My Skil has
a thumb button that must be pressed before the trigger will go, and
I've appreciated that feature several times while picking up the saw
and accidentally hitting the trigger. I don't find the thumb button
to be inconvenient, but I suppose that depends completely on the shape
and size of your hands.
As for blades, I'm currently running a 7-1/4", 40T Freud "Diablo" that
I got at one of the borgs for <$15. I find it cuts VERY cleanly (even
in baltic birch, laminate, etc.) and quite quickly, and has lasted a
long time. I once tried a 60T Oldham blade, but the thicker kerf and
smaller bite bogged down my old saw. I've heard that Tenryu and
Matsushita make very good blades, but haven't tried them yet.
Hope this helps,