The tractor was delivered an hour ago. First impression is it's big. Compared to the BX it seems much longer and taller though the width feels the same. On the BX I felt more like I sat in the tractor where on the B I feel like I'm perched up on top. I now talk down to people where I used to be at eye level. The loader control seems much quicker and being able to use it at idle is nice. The location of the lever seems much more natural to me. I'll have to adjust to the location of things and get used to the ergos. The tip of my boot got caught behind the brake pedal when letting off on the forward pedal.
Thankfully I remembered the ROPs before flying into the garage as it's an inch too high to fit. Bet I have a post on that sometime in the future. The 3 ranges is nice but H is definitely travel only with no decent hills. M seems to work well around the yard, haven't tried L yet.
Access to things seems much easier under the hood. Haven't taken the loader off but looks to be a tighter fit to get at the connections.
Hope to get out and use it soon to better report. I will say I was sad to see the BX go. It did everything I needed and did it well. It really felt like an extension of me when I was on it. Hopefully the new one becomes that familiar as well. Not complete without pics!