chucko,
I will agree with others, there really is no comparison. I believe you will be served well by a BX sized machine. However, you certainly could "make do" with a garden size tractor. Here's my spin on the issue:
If you really want a BX and can afford it without any really major consequence to your family (can't afford food...clothes...need to skip mortgage payment...etc.) then I recommend getting one. Life's too short. Trust me, over the life of the BX, you will more than get your money's worth out of it. I also make the following recommendations:
If you're going to opt for a BX, get a loader with it. You will use it. You can't even begin to think of the many uses for it, but once you have one, you will.
I would also see if you could trade in the walk behind roto-tiller for one that fits the BX.
Oh...and get the box blade too, landscape rake if you need it. Do it all at once and put it on the same loan. In 2, 3 or 4 short years, the loan will be paid and you'll be really glad (for a really long time) you've got such a sweet package.
I suppose I should state that I have a
B2910 on 2/3 acre, so my judgement might be biased, but I've never regretted my purchase. I don't use it to mow, I have an 18 year old (wow, time flies) Honda HT3813 (paid $3000 back in '86) that does the mowing and light snow plowing jobs quite well, and is still going strong. At the time, I justified about 1/3 of the cost of my
B2910 to do jobs I needed to be done, I figured about 1/3 of the cost for jobs "as yet to be named", and the last 1/3 'cause I wanted it. Now, 3 1/2 years later, it's all paid for, a whopping 80+ hours on the meter, and I couldn't be happier. As I said...life's too short. (Feel free to show your wife this last paragraph. If you should opt for the BX, at least she'll know you're nowhere near as crazy as some of the rest of us TBN'ers. /forums/images/graemlins/grin.gif)
Good Luck.
~Rick