Neffmusic has a lot of reviews of both maker. I haven't specifically looked for the Drake reso on the site. I doubt the critic here of the Drake. It seems pretty obvious to me that Drake is a quality manufacture. The OP should have some idea of what he/she is looking for. The pieces seem like two totally different sound concepts. I like the idea of buying used pieces. Then you don't get stung by the depreciation on a piece you don't know if you will even like.
Thanks for clarifying your comment. Yes, both Drake and Phil-Tone have several models. The OP apparently does have an idea of specific interest and has narrowed the choice to two mouthpieces that are similar in intent. They are unique in the world of mouthpieces in that very few claim to have any relationship to the Otto Link Resotone.
Also unique is the fact that both Drake and Phil-Tone have a trial/return policy. And Phil will make adjustments to the piece if you buy it from him. How old school is that?
OP - I have not played the Drake Reso, but I have played the Phil-Tone Intrepid since they came out. I talked with Phil about the horn I was playing (actually he already knew, and confirmed it), and the sound that I wanted. Phil made just what the doctor ordered, and I have since sold most of the mouthpieces in the ol' mouthpiece drawer - including my Lambersons. The only mouthpiece that I have purchased was another Intrepid for my other Borgani.
P.S. Regarding the comments shared by Ben Allen. I have also known him for a long time, and am among the many that respect his word and his work.