Depends what i'm doing but these three are my favorites:
For light manual work i carry this CS Voyager tanto:
It's great for anything from ripping down cardboard (it cuts right through those pesky staples) to cutting ancient barnacle-encrusted 2" nylon rope free from a propeller, miles out to sea.
The half serrated edge helps for the stuff like the staples and rope and the blade is super tough.
If i want to carry something smaller and lighter, i have the one in the middle here (big pic warning):
If i'm in the woods i carry this:
in addition to a larger blade i have that's somewhere between a bolo and a machete.
It's made from a automobile leaf spring i believe and really heavy for it's size.
My EDC is a 12 dollar Appalachian Trail 3" folder I picked up at Lowes. I know, it's almost sacrilege to carry such a simple blade these days. But, the zinc and rubber grip has worked very well.
I have handled and manipulated this blade when my hands were dry, wet, sticky, covered in dust, grit or powder and I can open, close and use it without it slipping. I have had to sharpen it a bit more often than I'd like. But, I have carried it with me on patrol as LEO for 5 years and losing or breaking it would hurt my wallet a lot less than a more expensive blade that I wouldn't want to take out of the house.
The second one is a sweet blade. For camping I carry my folder and one of three monstrosities.
CS GI Tanto w/ my own shitty paracord wrap.
Bear Grylls (never heard of her) Ultimate Survival knife. Not a bad knife for the price.
KA-BAR (Olean, NY) Black Tactical Tanto. This is my favourite for camping.
Carrying any knife without a suitable reason is illegal here.
If I did EDC It would be with this...
Cold Steel AK47 Mini.
Also that's an arm hair I shaved. Not a pube.
Holy ****. I am starting to come to a realisation. I am a geeky white guy with a knife fetish. Am I turning into something I don't wanna be...
You and me both. I have a trunk full of them.
Nice. Here is the wrap after I redid it. I found woodland MARPAT paracord so I wrapped a few things with it, including a cheesy "ninja sword" machete.