Son's got a 4660 with a 93' Pommier boom, optional one size larger tires and a Raven controller.

Pros

Light

Stable as long as you go to 120" with it

Nimble on ends, around obstacles  I can actually get more acres per hour in fields with lots of obstacles than the 1286 due to faster boom folding.

Great A/C, keeps me cool on the hottest of days in south Texas

Cons

Small cab, comfortable, but real cozy

Small payload when running high GPA

Clearance could be a little better for taller cotton

I don't like the Raven controller, too many glitches

Overall a good machine, would get another if this one blew up