Q. Which bike is good Bajaj Dominar 400 and KTM RC 390?

Both bikes are good in their segment. RC is for track racing and Dominar is for touring and daily commute. If you prefer long ride then Dominar is always a better option. RC is aggressive and for long ride it's not preferable for both rider and pillion. On highway cruising Dominar gives better performance because of it's weight while handling of RC is much more reliable and precise. It's always riders choice that which bike is comfortable to ride. I will suggest that you should take a test ride of both the machines. Thanks.

I liked KTM RC 390 but I didn't bought it for two reasons - 1. Pillion seat position2. I don't like the noise it makes

Both are good bikes...one is a track focused and the other is touring ....choose as per your needs