Best Blocks for the Money?...
My experience also echos most of the others, Garhauer probably has the most bang for you buck.
As to their service, I found it second to none. I was building my own mast, base and rail attachement brackets for a KISS Wind Genrator and they were great at providing modified versions of existing products that they use for other things. In other words, if you want them to add a diesel engine flywheel to a mainsheet block they''ll start welding as soon as they know what side of the flywheel you want to attach to the block axel <:-)