You will get better posts than mine because I am a new tractor owner myself, but I am of the strong opinion of 'yes, it is much more durable.'
I bought an
L35 last year and can't say enough good things about it. There are a few key aspects which lend to its durability. One key factor is the heavy subframe which, to my understanding, is almost mandatory for a tractor that uses the backhoe under rough conditions. The lubrication system is better. Many other things.
The
L35 is pretty much the way that I like to have things - meaning that it is most likely over-engineered to my needs. If I go to the effort of buying a tractor along with all that means in terms of money outlay, I don't want to find myself with a tool that can't do all of the jobs I need it to.
So anyway, there are other opinions which are probably along the line of saying that you need to figure out your needs and then purchase according to those requirements. That spending more is just a waste of money. Other people say that you should buy as much tractor as you can afford.
For me, the TLBs are a very good tractor that gives me an extra margin of performance capability. In my mind, the extra margin is worth the higher price.
Good luck.