I'm quite the fan! Never seen this thread before.
I like a lot of psy-trance, but there's also a reasonable chunk that I kind of dislike. It's got to be somewhat uplifting, something to get me going. It helps to have some kind of melody, and not just be a
kickdrum, a running bassline, and ghost train noises over the top (quite a few "psy-trance" songs I've heard are basically this, no thought or effort put into them whatsoever).
Shining examples of songs I consider to be "good" psy-trance:
Talamasca vs. Space Cat - On Purpose - my all-time favourite track. Just absolutely banging, I get chills even as it gets going.
Space Cat - Power Up - That vocal melody towards the middle is absolutely fantastic.
Oforia - Special Offer - Again, it's that bit in the middle that just rocks so hard it's ridiculous.
So yeah, I like it a lot, it's just got to have that uplifting, techy edge to set it above the "everyday" material. I notice that OP also mentioned Vibrasphere, them and Ticon were always favourites of mine too.