I agree with Roy, head and block prep is extremely important. Especially on engines as old as ours. I really don't think it's possible to get away from that requirement.
So, while I'm interested, I do have my reservations. However, I think I've got a good setup to try one out on. My head is flawless, RA around 25. I'm just uncertain about my block's deck... it's a mirror, but I need to get it verified that it's completely level.
As for online reviews, people who are satisfied don't often post useful info,if they post at all... BUT, people who are dissatisfied ADVERTISE. You just can't get them to shut up. Taking any online reviews with a grain of salt is always in order. So, while the number of positive reviews I see for a product rarely factors into my decision, the number of complaints does.
And BTW - From what I've seen in yards and in posts on the various forums, the factory block prep doesn't look close to an RA of 80. I'm no expert on the matter, but if it still catches my fingernail it's barely smooth enough for a composite HG, much less this one.