I just bought one of the VPI HW-17F cleaning machines that recently came onto Audiogon. I owned a HW-16.5 for 10 years or so. Both do a great job. Since the HW-16.5 utilizes a manual brush, you can give the record a better scrubbing. The HW-17F is quieter to operate and I think I read that it has a stronger suction motor. Overall it is a more refined machine that for me is worth the extra money.
VPI HW-16.5 vs HW-17 record cleaning machines
I now have a VPI HW-16.5 that I bought new a couple of years ago. I really like it; it's well worth the $$. But I've seen a couple of used HW-17's for sale recently, & I'm wondering if it's worth it to upgrade. And does anyone know about various "vintages" of the HW-17? I believe it's been produced since 1984. Thanks in advance for any advice!