where does DLM stack up in the supercharger standings, i always thought DLM was like the pinnacle of superchargers for vipers
DLM (DL = Doug Levin M = Motorsports) is a tuner who provides supercharger packages. The supercharger he uses is the Paxton NOVI 2000 (I think - he or one of his customers will clarify) but he does a customized installation and tuning package, of which the supercharger is the main part, not the whole.
Whether or not he is the best can (and has been) argued until everyone is blue in the face. Jason Heffner can (and has been) also be touted as the best tuner with the best supercharger package. From what I've read and seen, anyone would be happy with either package. You'll rarely, if ever, see a customer complain about either tuner. With those two, the choice probably comes down to geography.
For a DIY kit, Roe seems to be the hands down favorite. Again, I've been lurking the Viper sites for over a year now and can only recall one complaint against Roe, which he tried to remedy but the other party seemed rather obstinate about the matter.
And now that I've regurged my accumulated hearsay on the subject of superchargers, I'll return to lurking.