That is my experience too: i have a neck emerald in an ES335. it definitely has a high output, very articulate and clear, with a bit of emphasis on the lower mid, making everything a little bit thicker than a regular PAF. in that particular 335, which is not so bright, almost woody (they vary a lot from model to model), it lacks a bit of range in the highs for my taste.
I have a friend with a VHII in a 335 neck and it sounds really like a telecaster neck, very open, full range, more define sound, and without the bump in the mids that i have. but he has that bell like quality in the highs that i don't get from the emerald.
In the end, my 335 sounds a bit like his, after he uses a tubesceamer or a rat at really low gain to fatten up its tone just a tiny bit and give it a bit more punch, but the difference here just comes from the pickup.
I'm currently thinking of swapping the emerald for a VHII because my particular guitar is all about the mids, and doesn't have a lot of highs. and i just fell in love with the open rangey tone and clarity of the VHII.
but that's just me ..
hope that helps you getting a better idea.