I have a pair of Rush 2.00" slipons on my 2011 Street Glide. I'm still using the stock header pipe with the catalyst. That's all I've done to the bike so far. In this config, it's not too loud. It sounds ALOT better than stock, but it's not super loud. In a way, I like that. In another way, I'd like to get a header pipe without a catalyst to increase the flow and volume some (maybe alot?)

 

I have true duals and monster ovals on my FLTRU and they can be mellow and deep when under normal throtle but bark when under hard throttle. Vance and Hines are #1 when it comes to quality pipes in my opinion.

 

I have the V&H Twin Slash Rounds (non epa compliant version) and Dresser Duals on my Road King.

I get a lot of compliments on the sound of the Twin Slash Rounds.

They have a pretty loud bark on accelleration, the harder you twist, the louder they get. They quiet down considerably at cruise.

I like them a lot, they are plenty loud. Any louder would be too loud in my opinion.

Also the sound will not change any in time because they have steel louvers for baffles, no fiberglass to burn out.

 

I put on a set of Twin Slash Rounds with the stock head pipes and it was a good sound.
Then I put on V&H Dresser Duals with the TS rounds and couldn't stand it. Loud isn't the word for me. Took off the TSR after a couple of days and put back on the stock mufflers.
Convinced dealer to take back the TSR and I have SE Fatshotz on order.

 

LoVe my 2into1
Great sound
Good response and dynoed really well

 

+1 they sound like flowmasters IMO

 

Just commented on the V&H's Power Duals with the 4.5" Twin Slash Monster ovals, awesome set up, awesome sound, great looks and great hp & tq (90hp & 102tq), wouldn't run anything else.

 

i also went with the twin slash rounds and they sound good to me. im sure the ovals or monsters have a bit deeper tone but for the money the rounds are a good buy imo

 

V & H Power duals with regular ovals. Nice deep rumble. An EG went by me the other day it had a great sound and I noticed that it had the regular ovals. I like em.

 

I put V&H all the way. Not to loud but loud enough. I leave for work around 530 and it does not bother the neighbors. Any louder and they would probably start bitching. Nice sound, could be a little deeper, but would work.