I like ETN.fm for this area of dance music. Sometimes it gets a little too tweaky for my tastes, but that might be fine for you. They might be more progressive than trance, although I think they have another station for that.
Main thing is they have a lot of good DJs spinning interesting tracks. Sometimes they have a DJ that spins corny cheezy stuff, but for the most part its good. They’re also on iTunes so you can check it out at work. Tracklists are bad, but using it in combo with Shazam has allowed me to find a bunch of interesting, obscure electronic, trance & progressive tracks.