L3901 is a great tractor but the loader is pretty weak, comparatively.
L3560 is an amazing machine, strong with the optional LA805, but price it out on the kubota website (with loader, bucket, 3rd function, rear remotes, tire choice) and try not to spit your coffee on the screen.
Which is what led my own search to dial in on the Kioti CK3510. They used to be even more of a bargain, but still a LOT cheaper than a Kubota with the same capacities. Nice strong loader for lifting a full IBC tote of wet firewood, or a big log with a grapple, etc.
My CK3510 has a DPF that requires regens every 40-50 hours, which in practice is no issue at all. Often times I just hope off for the 12-15 minutes or so and do some other chores, but I've also simply worked right through it when required. I can't say I've noticed the extra fuel consumption it runs through during those regens, its a very efficient machine overall and extremely reliable so far (280 hours now).