No problem with any of the exhausts mentioned here.  I put a sportster muff on mine cause it was CHEAP, and my original pipe was ungly/discolored when I got the bike.

After putting the sportster muff on, I noticed the chrome is outstanding, the sound is decent, and the bike's power was improved.  Still need to move it further back to keep from blackening the rear brake arm.

Screaming Eagles sound soooooo good but the stock carb can't keep up with it.  Stock Sportster carbs barely keep up even with massive jetting changes.  My neighbor has Screamers on his sporty, and I've had to help him with the jetting, that's how I know.  In return for my help he let me borrow an SE to check it out on the Sav.  I need to get another carb and start playing.
 
SUPERTRAPP - One was on my XR500 when I got it, not a Savage but still a thumper.  That's a good exhaust.  Having a hard time parting with the money to get another (another Screaming Eagle problem).

Anybody try a dynomax glass pack, or any other car muff?  Dynomax is  $19 in the Jeg's catalog.  May have to get one just to try.  It would be different.

Sooner or latter everything comes to money. Otherwise nobody will have to work and everybody will have a bike to match each suit. Not too long ago we ere discussing the  double price of the same exhaust if You buy it from the dealer, compared with some car catalog. Here the things are comming to the same - what You want to get and how much do You want to pay for it and how much time and effords are You ready to invest instead of money.
So far I like the best the Screaming Eagle HD pipe. It works very good with the stock carburetor after rejetting and You don't have to spend hundreds of $$. The Sporty pipe works just fine and is an excellent deal for the price. I don't have any adapters, just a mounting plate, but even if You have to put an adapter  it is still worthed the time. And if You have the time You can order the stock gasket , like Yoou have to order it if You buy the original exhaust.
So far I can say that a gutted stock pipe sounds the worst and after that is the stock 95 and latter  pipe in an original condition. About the performance I haven't found anything worse than the original Suzuki pipe.
This is my oppinion of cource. Everybody has one.....

No argument about the Trap or Raask. I never tried them, but I am sure what is designed for LS will work the best and fit the easiest.
   The Sporty exhaust fits right on- it has the same diameter like LS pipe. The only thing that You have to do is to make a L-shaped plate with couple of holes - bolts to the original mounting bracket and the exhaust mounts to the plate. The problem that people were complaining about is - the original pipe is longer and has a slight bend outwards. Th HD pipe is shorter and doesn't have any bend, so it is before the  RR hub and the smokes the RR brake adjuster. This why some of the riders go to a muffler shop and have a piece of pipe cut and bend to put it between the header and the muffler. It brings the exhaust back and points it out.
Would I have the money, I'd buy each one of the pipes and try them out. But Would I have the $$ I would be somewhere on the islands sun bathing my behind