I can help you with a couple of details.
The 2501 ROPS height is 91.7 while the 2610 is 99.2. You will not get the Kioti through an 8' garage door with the ROPS up (my DK5010 is shorter and gives me 1 inch to spare).
I assume you are looking at an HST. 2501 rocker pedal; 2610 two pedals. Personal preference. FYI: I am quite certain that the Kioti manual transmission is not synchronized to shift up through gears, but I recall F2/R2 are synchronized.
Copy and paste above is correct except the ROPS on my 2016 CK2610 is 92 inches high and does fit under an 8 foot door.
True for reverse and 2nd the only gears synchronized, really a non issue since you want an HST.
Front wheel drive shaft IS shielded all of the way on my 2016 model.
I have the small loader KL2610, it works very well and Not sure how much it lifts as I have a larger tractor for the larger loads.
The best thing with the 2610 is the engine size being 1.6 liter and it was handed down from another larger series tractor. One adjustment makes the engine 35 horsepower.
Mine ran an 8 inch
chipper very well BEFORE I turned the fuel up. Mine handles a 75 inch snowblower better than my other tractor (Kubota
L3940 HST). The 2610 gear does almost everything better than the larger
L3940.
It's been great but only has 300 hours on it. Had an front knuckle oring leak that was an easy fix. I fixed myself even though the dealer is 3 miles from my house.
Buy the rubber mat it will save the floor and is comfy on your feet.
The engine, being an older model and NON common rail computerized tends to be rough and tumble compared to say the CH3510 and up, I've tried them all and my neighbor has a 3510 which is very smooth compared to mine and stinks less.
Operator platform is big and easily accessible from both sides comfortably.
I run a 6 foot tiller on mine even with stock power it is no problem, nor is the 6 foot finish mower, 8 inch wood
chipper and 75 inch snowblower.
I can't say enough good about the thing. I bought a Kioti block heater for it and never installed it. One day last year it was -5 f outside and it started right up with 1 run of the glowplugs.
Might be wise to slow up on the internet comparison thing, I think better to try and run each model you are looking at before you buy.
What the dealer tells me is Kubota might have a better resale value but costs more to buy new. People try to trade Kubotas in for Kiotis and realize you can buy a 2 year old Kubota or a new Kioti for the same price.
The other thing I see is that Kioti does seem to have some setup issues on their machines, the dealer is constantly having to redo a factory setting for an HST peddle or some other stupid adjustment that the factory simply got wrong.
I go to the dealer and this one won't move or this one has no power or some un-needed crap like that. Not sure about Kubota as I hate the place and don't like going there,
Good luck whatever you choose.