I have most of those attachments. The vast majority I got used or they came with a used tractor. Also, most of my attachments are for the 425. The experience may be different with a more powerful tractor.
Buckets: All buckets are good (I have all of them including the utility grapple). I use the large bucket the most by far. The 4-in-1 is good to dump something in the back of a pickup truck as a regular bucket doesn’t work so well (bucket tilt is limited when at full height). Also, the 4-in-1 can pick up a log for easy sawing (but so can the grapple bucket or utility grapple or mini hoe with thumb). I would buy a piranha bar WAY before the short bucket teeth.
Mowers: Both the finish and brush cutter work very well.
Post Hole Digger: The post hole digger is fair in my view. It’s handy to be out front and the ability to apply down pressure is great. Seems to put a lot of stress on the arms.
Stump Cutter: Have it but never used it. From comments on here I would put it in the fair category. I wouldn’t personally buy it and would rent a better machine if needed.
Rotary Tiller: Would also put in fair category. It “might” till up virgin soil with enough passes but I wasn’t impressed. It seems to work best travelling in reverse. It also catches a lot of stones that will lodge between the tines and cover. It’s not as good as a tiller used with a conventional tractor.
Rake: Works ok for some stuff. Not sure I would buy it.
Salt Spreader: Have it but never used. I’d need to spread a lot of salt/fertilizer before I could justify.
Power Dumper: It’s decent. Again, easier to drive in reverse than push. I would probably buy it.
Mini Hoe: Works really good to lift logs for cutting. Doesn’t work so good for actual hoe work. Puts a LOT of stress on the lift arm’s.
What you’ve missed or may want to consider:
Potato Digger: This is great to loosen soil so you can scoop or till. Can be used for trenching. Very useful in my opinion.
Forks: A must have in my view. I might buy them elsewhere and weld on a quick attachment since the PT version is a bit expensive.
Cement Mixer: This is the one attachment I’m wanting but don’t have. I mix a fair amount of cement from time to time. Would be great to mix in one location (like from the back of a pickup) then drive and pour in another location.
Lift Boom: Another fairly cheap attachment that’s been quite handy. Can use like an engine lift. Also, to remove heavy loads from the back of a pickup.
