Welcome! Are you planting a garden or just replanting your yard? What type of soil do you have? Any rocks or roots? The tiller won't like those. The tiller will get the soil more fine per pass, BUT, you will need a super slow low gear. You can go faster with the disk but it will take more passes.
You need a PTO powered roto-tiller, assuming you have HST transmission.
To function well as a primary tillage implement, a Disc Harrow needs 22" diameter pans or larger. A B2601 can only pull a Disc Harrow with 18" pans in secondary tillage applications and only under ideal soil conditions.
Go with a PTO powered 48" to 60" roto-tiller for which a B2601 has ample chassis weight and ample horsepower.
LINK: http://www.tractorbynet.com/forums/attachments/308251-disc-harrow-selection-18-45-a.html?highlight=
Not sure what you are planting. Most seeds only require a minimal depth of tillage. In timber you aren't going to like a PTO tiller. Well, I should say, your PTO tiller isn't going to like timber.
Any type of disc tool will scratch up enough loose soil to cause seeds to germinate and grow.
Back to the first statement, what are you planting?
Any disc. Then broadcast the seed. Then drag anything over it to put a bit of cover on the seed. A cattle panel or hog panel with a heavy post or log tied on it makes a great "harrow".![]()