Bill,
Having a B21TLB heres my feedback:
- Need 91" door height or 8' door if storing inside
- small stumps to 15" OK - larger or high qty get an excavator
- removal of BH - easy on
B21 - big consideration for me
- integral backhoe is tough for size as it is designed and built as TLB -not an addon
- resale value is very good on TLBs - it will easily resell
- Unit is commercial grade - FEL bucket and hoe are built very well
Bottom line if budgets allow get the TLB - you will be happy, also if you need to change implements frequently from BH to other rear attachment this setup is the best. But if you are choosing one or the other I would do the 2710 - you can always buy a another one and have two!!
Consider your use and determine what you will use it for as well how often you will change rear implements. At the end of the day you will figure out how to do what you need done with either unit.