Nothing wrong with Ceriatone's iron. I prefer to spec my own when doing a build, though. Gives you more control over PT secondary voltage and thus B+ and plate voltage. And I prefer to spec my own OT so I can dictate what primaries are. Merren, Classic Tone, Marstran, Heyboer... all good.
I like Ceriatone for their kits. You can get any of their amps super cheap and build it yourself. Great learning experience and you can voice the amp exactly how you want it. With all the hot-rodded clones they offer, there's really no reason to get anything else unless you don't want to learn all the electronics stuff and can't put a square peg into a square hole.
That said, some of their amps have mistakes in them. So you need to know what you're doing and not just blindly follow their layouts. But once you learn how this stuff works, you'll really never amp hunt again because if an amp you have is too loose or too bright or not enough gain or you want more mid emphasis higher up, or whatever... instead of flipping an amp, you'll know you can just change one resistor to get the exact sound in your head
