I am looking at subcompacts myself right now. Here is my take on the GC's. Every model has pros and cons, but the GC does have a few stand out features
in my opinion. The backhoe bucket has almost twice the capacity of the others, by far the best instrumentation (and backlit for night operation), the 3 point arms can stay on when the backhoe is mounted, best pedal arrangement of the 2 you mentioned, 72 month 0% financing available, and super strong hydraulics for a subcompact. The GC can pick the front wheels off the ground with the FEL while running just above idle. The
BX25 I tested would hardly move the bucket at all at the same RPM.
The cons, again
in my opinion - the seat sits kind of high in relation to the steering wheel. I wouldn't call it uncomfortable, but it is something that stood out when I demoed them back to back (JD takes the win here with the best ergonomics), the BX had smoother hydraulic control (not that the GC is bad), funky mower height adjustment (there is actually a chart for this), and it does not have the specific aftermarket support (less popular) that the BX enjoys. Also, around here anyway, there are not near as many Massey dealers as their are Kubota and Deere. I am concerned about getting needed parts in a pinch if I had to with the smaller dealer network.
I only briefly looked at the SC2450. It seemed like a nice unit, but 3 things that concerned me were the rocker pedal, the lack of a temperature gauge, and not knowing how involved MTD is with the available attachments. The snow blower mounted on a SC2400 at the same store did not seem very sturdy compared to other other brands I have looked at.
Your quoted prices are high if that is just for the TLB before taxes. I can PM you the quotes I got from a dealer on this website if you'd like. I'm not sure how he feels about them being posted publicly, so I'll refrain here, but I can tell you your quoted cash price is close to his financed price.