Can someone give me the pros and cons of these engines for a truggy? Really on the fence and don't want to make a bad choice. (Don't know if i can really go wrong with either)

All I can tell you is that both are awesome. The Roma doesn't scream like that keep off but it pulls. And the Roma has a lot of grunt and snap like a 28. The keep off is nasty and grimy with plenty of top end and it also comes out of the the whole but not like that Roma. But I love both I'm just a purple headed lover though!!!