We own two BXs as well as a 1025R and the 1025R has much better axle-tie rod configuration for working in the woods, we loaned our BX out and both tie rods had to be replaced. The operator was/is an idiot and just didn't have a clue how to operate. My wife, kids, grand kids have never damaged steering components on the BXs, but we've torn a couple of boots, so the point of increased vulnerability is still worth considering. It's not a deal breaker for us, but may be for others.
On the other hand the BX has a bit more ground clearance, especially with the MMM on, neither great, but there is a difference and if you accept the limitations, you should be OK.
The BX has quarter inching valve 3PH while JD has position control, I HATE quarter inching 3PH.
We really like our BXs, but don't deny they are a dated design, I've said since the 1026R came out to replace the 2305, Kubota needed to upgrade to retain their market share long term, but the "improvements" from the 60 to 70 Series was very minor. That said, we all still prefer the BX over the 1025R with more features, much to our surprise, so you really have to consider the intangibles.
It's always a good idea to test as many tractors as you can and at the same time consider how important a good dealership and cost is. I'm sure I've missed something, but am confident someone else will correct me.
EDIT: I forgot to mention removing/installing on a regular MMM deck is no big deal if you are in decent physical condition if done so on level concrete especially, 94BULLITT has You Tube videos demonstrating what it's like.