Wow, quite a time frame to ask for suggestions from the past 4-5 years
Anyway, some quick suggestions:
Proxeeus - Non-Euclidean Geometry (one of the best goa trance albums of the past 2 decades, yes, seriously)
Morphic Resonance - The City Of Moons and Perplexity
GoaTree - Black Star Of The Death
Ultimate Xperience - The Realm Of A New Dawn
Goasia - Landed On Wrong Planet
Triquetra - Ecstatic Planet
VA - Fluorotronik
Audialize - Starship Earth Remastered
Denshi Danshi - Brain Chemistry
Nervasystem - Brainradio
Unknownium - Unknownium
Oforia - Read More...
Funny side note: going through my collection I realized that I haven't really bought/downloaded much goa/psy trance in the past few years...