I've had a SOG Bowie for a little over two years now and I think it's still my favorite knife. Great fit in the hand, great feel. Plenty much sharp too: no problem harvesting acres of forearm hair. It takes an edge and holds it.
I also like the blade thickness of 0.280", SOG has really spoiled me on those thick blades..... a great prybar if you need it.
The bluing is really nice but it didn't take me long to trash it. My Bowie is definitely a user and I discovered that the bluing is no match at all for whatever is acidic in cantaloupes and honeydew melons. So now the blade has more of a splotchy look to it. Oh well.
If "looks" are important, the SOG Bowie is a great looker. Sleek and slim and substantial.
The leather handle is excellent, with indentations for the fingers to improve grip. Once I scrubbed away all the varnish/laquer on the handle I've never had a problem with slipping, no matter how wet. I've purposely scrubbed the leather to rough it up which has improved the tactile feel in the hand.
As far as toughness, I haven't tried too hard to break mine but I'm not afraid to take on any task.
I once had more than a few Kabars in my collection but early in January I sent them to the troops in Iraq and Afghanistan via Bruce Sain at this website, 3rd category down:
http://americansnipers.org/items.html
I still like Kabar's but I just like my SOG Bowie better. One of my favorite "kabar" knives is my WWII-era Robeson/Shuredge Mark 2 USN. Looks just like a "kabar" but was made by a different company than Kabar. And 60+ years later the leather handle is still in great condition.
I've never been around the Becker so I can't comment upon that.
I'd definitely recommend the SOG Bowie. It is always the first knife I toss into the car when I'm headed into the field.
Cheers,
Carl