Bike Talk motorcycle forum

For those of you that deal with slip-ons a lot (resale or dyno operator), or if you own one of these and have heard another slip-on, how would you rank them for loudness? Preferably with a dual setup (seeing that going from stock headers to Dresser Duals increased the noise of my SE IIs a good bit) rate these slip-ons from the quietest to the loudest (i.e 1, 4, 5, 3, 2…..) Please rank them based on your experience even if it involves a couple of these slip-ons.

1. Screamin' Eagle II
2. Vance and Hines Oval Slip-ons
3. Bub Dresser Dogs
4. Cobra 4” slip-ons
5. Hooker tuned flow mufflers
6. Kerker Slip-ons
7. Python 3 ½” Slip-ons
8. Samson Silver Bullets
9. D&D 3 ½” Big Boss Slip-ons
10. Khrome Werks HP+

Additionally, if you have the knowledge or experience with...

I am planning on purchasing the V & H Oval Slip-ons, Kuryakyn Twin Velocity Plus hi-flo air cleaner, and the Power Commander III for a 2006 Road King Classic, EFI, w/stock ECU. The closest thing the Power Commander site has is all of the above except with an SE air cleaner system. Does the general consensus think that that will be sufficient?

Speed on two wheels....

http://video.google.com/videoplay?docid=4403537096953580454&q=speed on 2 wheels

I would like to upgrade my suspension. Looking at progressive 418 and 440 for rear. Does anyone have experience with these? Does anyone have other suggestions? Also, does anyone have suggestions for front end improvements?
Thanks

I just received a press release about this bike:

http://www.motoczysz.com

It is an American made GP bike that has been under development for a while. Site is kinda cool but lacks some really detailed info.