I have Rush slip ons on all my bikes, great product for the price. On the 06 RK I have the straight cuts 1.75 and they sound nice, loud but not annoyingly loud. On the 09 EG I have the Slash downs with the 1.50 and the are a little quieter which makes it nice for the radio. 07 Sportster has 1.75 and for some reason they are really loud on that bike, you can hear me for blocks away when I get on it good. Just put a set of 1.75 bologna cuts on the Misses Heritage and they sound awsome on that bike, best sound out of all the bikes.
Like I said for the money and quality as well as perfomance you cannot beat it.
Good Luck with whatever you decide.