Hello, I am getting a new slip on for my 05 raptor 660. I am not too familiar with any of the brands. I have narrowed it down to 3. Either the FMF, HMF, or Dr. D. I am leaning towards the HMF because I found it on ebay for 229 and it comes with the jets it needs. And I can also get a quiet core for it. That would be nice because I ride at night a lot. Then I can remove it during the day. Is that a good brand? Or is one of the others better? These 3 can all be found for around $250 on ebay, which is what I am looking to spend. Sorry if this has been asked a thousand times before. I searched but couldn't find a good answer. Thanks for your help!