835,000 on a C15 twin turbo Cat with a ten. This is an ISX with a 13 and had 2100 on it when it pulled into the yard last night.
Much better ride, due to the fact that the Cascadia rides on air bags on all three axles, while the 2005 Columbia only has airbags on the drive axles. Plus this is a walkin sleeper while the Columbia is a flat top. At 6'5", it's a big upgrade. We haul mostly hopper and livestock, with a little dry van, hay trailer, walking floor, etc, thrown in when the loads are there.
I bought a 2013 Chrysler Town and Country mini van last week. Got a great deal on it of $8,000.00 off. Has most everything on it. It's a lot like this one http://www.youtube.com/watch?NR=1&v=YbTTaxBPtVI&feature=fvwp
The only new cabovers I see on the road anymore are the Freightliner Argossy series. I've never ridden in one. But I have driven cabovers before. Not nearly as comfortable as long noses. Marine. This one is on long term lease but the retail was 128K. The only thing that needs to be changed is the drivers seat. The factory one isn't all that comfortable for me. We will replace it with an Elite seat when we get time. It is a better seat.
I have two partially herniated discs in my neck thanks to an old Pete cab over. This Cascadia is like riding in a limo in comparrison.
My uncle loved his KW cabover...could spin a 48' trailer in about 80'. (That is not a typo.) My wife's usual wrecker is a Ford C6000 ramp truck. It will do a U-turn in its own length. I wish my work truck was a C6000 instead of the awful Frightliner (also not a typo) M2 I drive.
Cabovers have their uses, especially in tight areas, as you noted. But for long haul, I prefer the longer truck. And at 6'5", the walk in sleeper is a big plus. As of today, I have put just under 5K on this truck, and except for needing to get rid of the factory seat, It's a really good truck.