I have always been a fan of tooth bars and am having one made for this tractor as I write. However, I was surprised that I noticed no deficiency in digging power without the tooth bar. Digging was really easy even in clay! Now I doo have a small bucket (65"). I could push the bucked right under the surface roots and it wouldn't stop until it hit the tap root. What the tooth bar will really help with is reinforcing that front bucket edge! (and all the other useful things those little fingers can do!) I bowed the bucket edge a little. loader is really strong. I asked my dealer to check that hydraulic pressure for the main system and loader were at the max allowable spec before delivery. I'm sure they are and maybe a little more because the loader will lift the rear of the tractor with me 250 pounds, FOPS 200 pounds, Rear blade 500 pounds, and 1000 pounds of fill in read tires! All together the rear must be over 4000 pounds and can still get it off the ground (maybe why I bowed the bucket).
I've been looking at stump buckets for a while and would love to have one. I like the really long ones that you can use basically as a pry bar on the loader (I realize the deficiencies of the extra length and thing the benefits outweigh them if you understand the physics)