It comes down to if your property is more hill or more flat.Thank you for your list of features to consider. That will certainly be a big help when I compare brands. The Kubota dealer nearest me sells Woods, in addition to Land Pride, so I'll check out the 72" the next time I'm there. I can see where a wider mower might save considerable time, but I'm not sure how the B2650 would handle the larger unit on my steep hills. It's something that I also have to take into consideration.
If it's all hill I'd say stick with 60 for safety and power. The 2650 will have no problem moving either mower but the heavier mower will have a greater effect on balance naturally just due to weight. Also if all hill it's that much more power your machine has to use just to keep the package moving so you'd have to slow down to maintain rpm.
Then again in the woods prd series there's only a difference of 66 lbs between the 60" and 72" decks.
Another benefit to the 72 is it's wider than the 2650. This I like because I can cut closer to objects and have less equipment close to the objects while cutting so maneuvering is easier.