The CHEAP ($4.99 ea.) Melling lifters I got from Summit for my 400 Ford look every bit as good as those Top Lines. I was impressed and they're still goin strong.
I think I read a response of yours in another thread about having success with the Melling hydraulic lifters, and I was very tempted to go with the Melling JB2011 at $5/ea. Then I came across a set of Lunati Micro-Trol for $6.25/ea and was sold after confirming they are Topline USA cast bodies and after reading positive reviews in other threads. I left a message with Melling's tech lead for information on where they source their bodies, but I haven't heard back. The recent photos of the Melling JB2011 body look identical to the Lunati/Rhoads/Crower/Howards bodies made by Topline. I'd be curious to compare the Melling body and internals to the Lunati, and I might order one Melling lifter from a local parts house (I know Autozone carries them) just to compare the lifter bodies and internals as I disassemble and clean the Lunati before installation. Either way, the Lunati and Melling look to be of superior finish than the Hylift Johnson line and cost drastically less.