Oh, for sure. I really like the versatility of them more than anything else, some good operating skills and the right attachments can go a long ways.
I love almost everything about my 4540. It's a very stout machine, as you've noted with yours the loader on mine is also incredibly strong. Thinking back I'm sure that I've overloaded it numerous times with no ill effects. I love how heavy the tractor is, it pulls implements and twitches logs without a hitch.
My only two gripes are:
1. I wish it was more powerful. It's got all the power you could ever need in low range, but I wish it had better capabilities for traveling uphill in high range. Specifically, up my steadily sloped 2300' driveway. If I decide I'm going to keep the tractor for the long run I'll definitely swap the ECU for a 4550's fuel map to gain those 8 extra horsepower.
2. The transmission is very robust, but not very smooth or functional for my application. You may know, but the 4540 and 50 transmissions are gear drive, non-synchronized 4 forward/1 reverse with a high and low range for 8 forward/2 reverse. It's a dual stage clutch, so if you're trying to use it for maneuvering in tight areas or plowing snow, there's a lot of clutch work and manual shifting.
Also, the lack of equal reverse speeds is frustrating. R-low is good for maneuvering in the woods, but it's really too low for doing any back and forth work like plowing efficiently. R-high is so high that it's practically unusable if you've got a lot of
ballast like me. Overall, I feel like the tractor is more suited to plowing a field than working in the woods or around the house. Great machine, just kind of a misapplication on my part more than anything else.
My dad's JD 4510 is a 12F/12R shuttle like your 5155, and once you've used one of those it's hard to get used to the gear drive with only 2 reverse speeds. So, I'll likely be upgrading to a 12F/12R tractor in the future, and I love everything else about my Mahindra so a 5155 would be a very likely candidate for me.