Gilera runner 172 exhaust

On my gilera runner malossi 172cc should I use a pm59 exhaust or the malossi exhaust not sure what’s best not worried about a few hp just wanted to know what’ll be better

 

The std exhaust will work fine but if you have to have a pipe then PM, just make sure you know a good welder because it will break/ crack !

 

I’m not really bothered about power different I just don’t like the stock exhaust if the pm cracks then wouldn’t I be better off with a malossi?