And also a lot of happy people. Mix I guess, like anything. Big difference probably is that if it comes from the factory leaking your warranty covers it, if you mod it yourself and it leaks, then you'll need to replace parts until it stops leaking.
I'm buying a B2601 and in this part of the world we're not getting the single lever coupler (apparently we're a price sensitive market and it adds a fair bit to the wholesale price). I thought about adding one, but for the price I think I can live without. I now keep a pair of gloves on the wall near the tractor, and that fixes two of my gripes with the BX - getting fluid all over my hands, and grazing my hands 'cause it's a tight space to get them on and off. The rest I can live with I guess.