IMO your wrong on the first part. I don't know one person that has Busse's that doesn't use at least one, many use all they have. Many do collect, which is a great past time that I have long done with many types/brands of knives, but also use many of my knives(also worked with knife for living).
And the "ridculas amount of money" isn't really correct either. For instance at this years Blade show I got a 6" bladed busse in Satin with hand shaped BP for $283 with tax. A great deal for the qaulity of knife.
I've been a huge knife and gun nut for over 30 years and top notch qaulity is what i choose to spend my money on. Some people will never understand why some middle class(on poor side of that in my case) will spend so much on knives when we drive around in a truck with 200,00 miles, put off buying cloths for self, and sacrifice in areas just so we can buy knives. But there are many that do just that for something they love and are passionate about. Yes, I'm a knife nut, and maybe to much of one, but I'm happy with it.
to the OP...the two knives you mention are at two very diff price points. So it all depends on what you want in a knife for what you pay. The RAT's are a Great knife for the price! Busse is a Great knife for the price!
I feel the Busse steel, designs, options, qaulity build, and esp the comfort of the handle over a RAT is worth the extra $ to me. But in all reallity the RAT will handle most any task I could think of.
Just depends on how YOU want to spend YOUR money.