Although I didn't compare the turning radius of each, I have compared the specs/features of Pioneer 1000, CanAm Defender and Kubota RTV X1100C.
What I'm finding is that no one manufacturer offers the perfect solution, at least for my needs.
Pioneer 1000:
Positives:
- 6-speed DCT (dual-clutch transmission) no CVT belts
- 72-hp engine good for speeds above 60 mph
- Low/high-range sub transmission
- 2wd, 4wd, 4wd differential lock and turf mode
- 2000 lb towing capacity
- 1000 lb bed capacity
- 11 inches ground clearance (10.5f/10r suspension travel)
Negatives:
- Poor hard cab design
- Heater is insufficient to keep up to air leaks in the cab
- No AC
- Plastic bed and no hydraulic assist dumping
There have been some reported issues of the DCT clutches slipping and Honda has been slow to repair or troubleshoot the problem. I would stay away from purchasing the Pioneer 1000 until the DCT issues are worked out.
CanAm Defender:
Positives:
- 72-hp V-twin engine good for speeds to 60 mph
- 4 mode traction system, 2wd, 4wd with Visco-Loc, selectable open dif in 2wd mode
- Low/high-range sub transmission
- Integrated cab version available with heat (no AC), power windows
- Nice cab and interior, gauge cluster, removable storage containers, etc
- 2000 lb towing
- 1200 lb payload
Negatives:
- 9 inch ground clearance on cab version vs. 11 inch on non-cab
- Visco-lok (limited slip) front differential not lockable
- No AC
- CVT belt
- Cab is not as well sealed at the RTV
- Plastic bed
Kubota RTV:
Positives:
- HST transmission for heavy duty use
- Diesel engine offers excellent fuel economy
- Good torque 52ftlbs
- Highest payload 1629 lbs
- Good ground clearance 10.4f/10.5r
- Average suspension travel 8 inches
- Best cab, heat/AC, automotive style controls, roll-down windows, well sealed
- 2wd/4wd, open rear dif (lockable)
- Hydraulic lift bed
- Metal body panels and bed
- PTO option for various implements
- Dynamic braking with wet disk brakes
Negatives:
- 25 mph top speed
- 24.8-hp engine (needs turbo and intercooler IMHO)
- Limited slip front differential not lockable
- Heavy 2370 lbs but most solid of the bunch
The RTV is a workhorse capable of withstanding commercial operation.
I'm leaning towards purchasing the RTV X1100C but it's a shame in my view that Kubota has done little in the last several years to bridge the RTV into a more rounded UTV. The low top speed I believe dissuades potential buyers who are looking for both the utility and fun factor in their UTV.
My ideal UTV would be a Kubota RTV fitted with an automotive style AT transmission, lockable front differential and capable of doing 40 mph.