Block-headed opinions
Garhauer is probably your best "cost benefit ratio" hardware.
General observations: Garhauer started as a small machining company and just keeps expanding. They are sailors and boaters and like to engineer thoughtful niceties/upgrades to proven hardware designs that are similar to many others in many respects... except one: they make everything a little stronger and heavier. :nerd:
If you want blocks and attachments that weigh half as much and have great strength, go with Harken. You pay more, but that money goes into R&D, and a strong warranty.
Lewmar, to me, is kind of a mixed bag. They do some in-house design/engineering work, but mostly "innovate" by buying out other companies. Their core products (like blocks) are ancient in design, and they sell 'em cheap to OEM's. Our '88 Olson came with a lot of Lewmar turning blocks and some truly awful genny lead blocks -- all replaced after 6 or 7 years.
(To give Lewmar credit, their "falling rings" design in their newer clutches works flawlessly!)
Our '88 Harken traveler system, however, is still as good as new.
I have bought a lot of Garhauer turning blocks and will buy more in the future. We do not compete (and never will) at any level of competition where an extra 5 or 10# of block weight on our 10600# boat will make any difference at all.
Opinions dispensed while you wait. Deposit .01 please.
Loren in PDX