I have a "version" of the Well L 96 which is apparently a Mauser L96... and mine is the review in the reviews section with vids, pics, etc... Anyway - I personally love it and have thrown several upgrades into it. (Zero Trigger, Piston, Spring, Teflon Bore, etc..) and it all works flawlessly. Also, the accuracy and power OTB are more than enough to be reckoned with.
I think that they're right though: It's still Chinasoft so there's a possibility you'll get a hit and it's awesome (like I did) or you'll get one and it'll be a hunk of junk. That's the biggest problem.
Perhaps, if you're willing, look for a retailer with a decent return policy if there's something weird about it?
Just my 2c on the topic