Second track seems to be better mixing wise.
I will only critizise your problem with stereo/mono.
Some tips you could need (maybe also for both tracks).
1: Frequencies: Put your deep sounds more in mono, higher ones in stereo. That is only an approach! Don't overdo it. In the Mastering i do that as well just a bit with an Imager (Ozone, you can also do that with some EQs).
2: Classic one: Technowhise, some PAs just work in Mono, on dancefloor you want to hear everything all over the place. Make sure, if you switch everything in mono (on mastering channel) you are hearing everything loud and clear. Also the rule: The important sounds in mono (you can layer some stereo lines to them)!
3: Yes, just don't overdo it... pan just sometimes, not on the whole track (in some cases that will also work, of course). The benefit is that you can emphasize more.
And you can also fade in stereo (breaks/build up), but be aware that it is a bit louder in stereo that in mono.
4) Listen on monitors AND headphones of course, cause of crossing effect.
That might help. Yes, you know some of them already. Just wanted to make sure you know each point before going on (these are the easy ones).
I really liked the stereo/mono relation in the second one though. If the tips are not helping at all, look on your synthesizers settings and sound adjustments. Effects like Reverb, Chorus, Flanger etc. are influencing Phasing a lot.
Also look for Unison in the modulation view (uneven voices more mono than even; more voices = more stereo; detune between these voices also cause more phasing.
sry for my bad grammar.