Just my 2 cents worth.
Last year I researched splitters long and hard and ended up
with Northerntools' 37T with 4way wedge addon.
All the 20-30T models I looked at were $1200-1500 range.
Got this one for little over 2000 delivered.
Well worth it IMO, this thing is a beast with a 5" cly and very sturdy
log stripper. Have now run 30-40 cords through it, mostly oak and big.
The 9hp honda is smooth as silk and sips gas, I can split a cord on less
than a tank of fuel and the pump has no trb getting through big gnarly
knots and crotches. Have purposely tryed to bog it down, on occassion
a big white oak or locust knot will stop it. But just move it over a little
to the side and if it cant split it, it just cuts through the wood. It actually
bent the 1 and 3/4" solid back plate cutting thru a white oak knot, not much
but it now has a slight bow to it. Still split the thing though and no cracking
in the welds. Very impressive, to me and my neighbor who is a welder and knows this stuff pretty good. All that WITH the 4way on it. Typical time to split a cord of oak by myself is 2 hrs going at a reasonable pace not killing myself. It impresses the H*** out of all that have seen it in action.
A little more money but well worth it if you can spring for it, you wont regret
it. You can find pics of it here and I'll post a pic of mine later tonight.
http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200326296_200326296