I've heard this a ton of times now and I'm not bored of it either - even though the melody has been firmly lodged in my head for a week now.
The last mix is by far the best in terms of balance and combining the parts of contributors more coherently. The drums fit well on that last mix, and the solo sounds more like it belongs now too.
It's almost a shame that that's the best mix because I liked the wah and the synthy guitar, but it undeniably works better this way. Without Trish's vocals it could almost pass for a lost Wedding Present song now, but the melody and singing take it in a different direction.
It's an excellent tune, I'm glad that you've managed to keep moving the mix in the right direction.