That depends largely on what you're looking for .....The yugo has a new US made non-chromed barrel and I believe the yugo has a stock mount that is unique to it. It may/may not have been built on a matching numbers parts kit, if that's important to you.
The AES-10B is imported as a single stack mag gun the the monkeys at century put it in an end mill and open the magwell up to take the 30 rd. mags. Sometimes they open it up a little too far and you get a floppy mag fit. The AES-10B is an all romamian built rifle, except for 922r parts. Usually all numbers match. Barrels are chromed and the wood looks more like the russian RPK. The other downside is that they are shipped with a modified PKM bipod, so you have to replace it with an original RPK bipod if you want the correct look, if not it works OK but won't engage the small hooks on either side of the rear of the front sight base. Hope this helps
The AES-10B is imported as a single stack mag gun the the monkeys at century put it in an end mill and open the magwell up to take the 30 rd. mags. Sometimes they open it up a little too far and you get a floppy mag fit. The AES-10B is an all romamian built rifle, except for 922r parts. Usually all numbers match. Barrels are chromed and the wood looks more like the russian RPK. The other downside is that they are shipped with a modified PKM bipod, so you have to replace it with an original RPK bipod if you want the correct look, if not it works OK but won't engage the small hooks on either side of the rear of the front sight base. Hope this helps