Slightly unfair comparison, my kubota excavator has a sealed cab and a superb A/C system and I've been running it alot this week so I'm a bit spoiled.
My ASV is an early 06 model and they made several improvments after I bought mine. Insulation packages, forestry packages, etc. It will cool but not like the kubota. Now from what I've seen and heard the SR series A/C is completely different and much better. I think they call it a red dot system. Just pick a hot humid day and demo one at high noon and see how long it takes to pull the temp down in the cab. I have just begun installing the insulation, sound proofing package so its getting better. Robbie