Well, since they are made with a different material it makes sense that they seal differently, which usually affects sound. They meelec biflanges are reportedly reducing the sub-bass and increasing the size of the soundstage. I take it you don't get those benefits? If you want less sub-bass you should also consider the comply s-200, Shane posted that it does just that.
The soundstage is good yes, but everything else about sound is lacking. The bass isn't textured, the mids are a bit recessed and the treble is not even close to the clarity, detail and sparkle I get with sony hybrids. I must be having very different ears as most tenore owners but I still find sony hybrids best tips by far. They add a bit subbass tho, but I like that. Tryed meelec and vsonic single and biflanges, some lunashop tf10 tips, some sennheiser tips, even pistons baby silicone grade tips haha. Wide or narrow bore, they all don't sound as good as hybrids to me.