Probably not going to be any better. I've found Chinese 7.62x39 to be some of the best surplus available in this caliber. Also, I've only seen Romanian ammo in 1320 round crates, are you sure it's Bulgarian? I've never seen Bulgarian surplus in 7.62x39 for sale, just in x54r.
If it's Romanian, it'll be okay. I've fired two crates of it, one crate was pretty bad (inconsistently loaded to the point I got malfunctions with seven different rifles, but keep in mind I'm pretty sure this was an isolated thing.) and the other one was fine but not anything special. If you want my advice, go for the Chinese. It shouldn't be lacquer coated, either, so you'll save yourself from buildup in your chamber, too.