If you have garage sales or pawn shops that you can consistently get decent tools at decent prices, go for it. I would like to have a mismatched set of working tools rather than a shiny drawer of ****. I've got pawn shops here and there but none are really that convenient and they definitely are not cost effective, even compared to ebay. this area is not really good for garage sales because there are so many flea markets & church events going on; those are just a mess and I avoid them if at all possible.
For me, learning HF's 'system' was easy. It's convenient and inexpensive to get stuff from there. I like Northern's tools too but they are way more pricy than they need to be. Gearwrench and Northern side by side I would pick the Northern, but I didn't have that kind of money to spend on this particular item. There is one bolt here and one bolt there that this kind of wrench is great for, not absolutely necessary but about 90% faster with it.
I wouldn't have caught this if I had my regular combo wrenches with me that day. Since I did, I figured I'd share it. I still give the both sets (I bought & used standard & metric) a PASS and would buy them again. They just aren't going to hold up to improper use as well as some other might.