Hello, desperately trying to wade through all the urban folk lore regarding exhaust mods. I am at a cross rods regarding - modifying stock mufflers –buying some slip on straight throughs from my local bike shop (very cheap) or biting the bullet and cashing out for expensive after markets. I have heard you can have probs with straight through pipes (back pressure scorching cylinders) but its such a cheap option. And I’m not sure if I will get a good sound from the modified stock cans, any thoughts??