I have had both models of rifles. The Czech rifles are well made and smooth, shot well. Mind you the latest batch (while being a refurb) looks better than what I had years ago. I have had about 6 of the yugo rifle ranging from the M48A, M48, and I think a M48BO but that one was along time ago. Some (the ones I have had) are smooth and are well put together, good value. The last M48 I have had an very oversized stock and the bolt was tight and sticky.
Pete