I had a 20SF (and foolishly sold it). It was a sweet gun, but one I didn't shoot often. They can be had for $650-range (if you can find them). They are a Glock - whether you love them or hate them, it is much like every other Glock; not particularly pretty, anvil-reliable, mediocre trigger, decent combat accuracy.
I've never owned a Delta (though I've wanted one for some time). I LOVE the 1911 platform. A Delta will set you back far more $$ than the Glock (if you can find one), and will hold less rounds in the magazines. I'd personally be more loving to the DE, not because it needed it, but because it deserves it.
As stated earlier, for a "woods gun", I think I'd choose the Glock. YMMV.
"I am sick and tired of people who say that if you debate and you disagree with this administration, somehow you're not patriotic. We should stand up and say we are Americans and we have a right to debate and disagree with any administration." - Hillary Clinton, 2003
TERM LIMITS NOW!!!