Tools are certainly a 'to each his own' kind of purchase. I am the owner of nearly a full shop of tools (hand, power, bench/table, etc...).
I am a diehard (no pun intended with Sears

) Craftsman man. My shop area looks like a Craftsman catalog. I buy them because it is in my blood, they are convenient to replace if necessary (at Sears of course), and I prefer the fit and feel of them. Had there been a Craftsman equivilant of the 7424, I would undoubtedly have purchased it instead.
Quality is a big thing for me. I was talking with a co-worker about my new 7424 and showed him the car after I had done it...he was immediately interested in duplicating the results on his vehicles. I gave him a list of the products I used, but instead of purchasing them, he bought cheap knockoff products and not only had bad results, but the polisher shot craps before he could finish his big Suburban.
So again, to each his own, but count me in the category of 'go with a trusted, name brand tool'.

Not that you wouldn't necessarily be there with me Hugh!