Been dabbling in this for a few years myself. From what I've discovered, there is ABSOLUTELY a difference between cheaply made VCR's and good ones. The picture you see playing back from one VCR to the next can vary DRAMATICALLY on a per tape basis.
If you get a VCR with TBC, you'll likely see a measurable difference in at least some of your tapes' playback. Having said that, all that matters is what you're satisfied with. If you're getting decent playback, with few flickers, few chromas, and a relativley clean and clear picture with the $5 VCR from the garage sale, then by all means - that's what I'd probably use. But if you have a lot of old tapes, you may find they are "choosey" as to which VCR they play best in - and after all, what you see is what you get.
This is a very good forum for VHS/VCR info. I would recommend having a look around. I'll link to a somewhat relevant post over there...http://forum.videohelp.com/threads/3052 ... 00-SR-V10U
Also, this is the capture device I use (these are all about the same, all that matters to me is capturing an uncompressed stream; included software is the biggest difference in these devices):http://www.amazon.com/Diamond-VC500-Cam ... B000VM60I8
The software that's included for the one I use is 'meh' - serviceable, but certainly not ideal.
I pair it with this Freeware (for personal use) capture software:http://www.nchsoftware.com/capture/
Also, depending on how picky you are, you may want to have a lot of HDD space available. Capturing uncompressed streams allows for a lot more freedom, and better end results if you have a decent PC to do just a little bit of editing with. Compressed transfers can look absolutely dreadful depending on the compression being used (I have found this to be especially true of most VHS to DVD stand alones). But again, if you're happy with what you see, then who cares?
Hope that helps, and good luck. It's fun to see the old VHS tapes come back to life. And although it's quite tedious, it's also a bit of a kick making adjustments to all of these old analog systems, tweaking them to get that perfect capture.