I have experience with both brands. Nova is really hard to beat quality wise. You really don't want to get into this battle. I'm not going to get into a pissing match over it. All I will say is that novarossi is known for their quality. They aren't my favorite engine brand, but there's no arguing with their quality. Go engines are decent, but no where near the quality of novarossi engines, but like you said, they are more affordable than novarossi engines.

There's an old saying about a 1: Cheap, 2: High quality, 3: High performance engine... Pick two as you can't have all 3. From what I've seen, it is 100% accurate.