We'll it depends. People have asked me if I would ever consider getting a front blower.
Eh... for me I would rather keep the loader and have a rear mount. I mostly use it for cutting up banks and then turning around and blowing them away.
Also a loader can get you unstuck if you were to get stuck.
Unless you get a hydraulic driven front blower (and you can't get one for a BX anyways), it has to stay with the machine when you upgrade. So it's a give or take.
Having a rear mount can go to another machine, like I stated earlier.
Only positive to having a front mount, you don't have to blow in reverse. Especially with folks with neck and back problems, it's justified.
Trust me, I thought all these things out before buying the rear mount blower.
Can't stress it enough... everyone has their own particular needs and wants.