The only issue really with nepros is they are very japanese. which means airmail and pay your way for warranty repair.
They are also so rare there is no realistic option to buy used, so the pricing is sort of sanp-on List > nepros list > Snap on (like new) used. So... net net pricing is a wash. Then get you into ergonomics and what not which is a bit personal.
The only technical fault i've read about was reports of high backdrag on the ratchets vs koken (edit: zeal searies). Maybe someone who has used them head to head has more info vs T72 nd F80? The 1/4 drive stuff is in some ways the weakest ergonomically from snap-on [edit: and so the most interesting place to look for other options like nepros].
In 3/8 and 1/2 the F80 series is so good theres not alot of reason to look for exotica.
[edit: this is my personal opinion...YMMV]
Nepros has a handle profile like Cornwell with 90 tooth and a QR that is completely flush with the head (1/4 drive are stuck out a little). Its a special mix that really doesn't have an equal. The machining is also better than Snap-On (Dual 80s are block-ish).
I like mine and they aren't tool box queens, I make a point to use them. Functionally they're extremely similar to dual 80s. Similar back drag, similar directional lever stiffness. They are very smooth. Koken Zeal has the best back drag of any ratchet I've used but that's an entirely different ratchet and there are only about 4 of them across the 3 drive sizes so I see little point in even comparing them. Im positive the Zeal is a weaker mechanism as well.
Warranty isn't as liberal of course but unless you plan on putting the pipe to it you shouldn't have a problem.
Can anyone tell me where the less expensive Nepros tools are? Everything I'm seeing is $300 for a ratchet I could get from Snap-On for $80. $400 Screwdriver sets. $600 socket sets. I'm genuinely asking because the tools do seem nice.
Nepros directly, Rakuten, or Franks. Franks Nepros prices are a little on the high side but he's got the cheapest shipping so it kind of equals out especially during his weekly sales. You also may have to wait for him to build a stock order which could be a week or a month.