I'm all about the D&D. 2-into-1 power and looks. I actually like the sound too. It's not as "Harley" as a true dual, but I still love it.
---Chris
I agree, went to the dealer and got to hear all of them (service was closed but parts manager had no problem letting me hear different combinations) I liked the D&D 2 into 1 over the V&H's and the Rino's.
I put the V&H Oval slip ons on my 08 Street Glide. It gives it a great look tucks up nice under the bags. They sound great with out being too loud. Really sound great ripping through the gears but at 70mph @ 2500 rpm they are nice and mellow and the radio is loud and clear.
I just put on V&H true duals and monster oval slip-ons and man they sound great!! Also at cruise speed they're not to loud and you can still hear the radio as this was one of the reasons I got this bagger!!
Get what you like. All of the ones mentioned have fans and critics. Most people will swear by whatever they bought and will cut on the other brands. Fact is, all the ones you mentioned are good quality pieces. Did I mention I like the V&H's? They are the best( see signature)