I'm inclined to say the second clip is 'better', but I have some comments about that:
The major difference between the two is obviously what you did with the bass, and the bass is more present in the second and I happen to like that; my first thought was that you ought to drop the volume on it a bit, but I'm hearing some dynamic inconsistency, not in the 'playing' (because you note in the title it's MIDI bass) but in the equalization. Compare the F note at :07 to the E flat at :14, the latter is way louder, differences like that stick out. There are different ways to handle that, but less ways if you don't have plugin suites like Waves that give you tons of options. Compressing the low end would probably make it less apparent (i.e, more even) but you can end up with artifacts or distortion if you don't do it correctly. Assuming you want to keep the balance in the track as it is now, I would have a compressor or active EQ clamp down on the loud bits. I would also try turning the whole track down a bit but that still leaves the volume inconsistent. If the first one is tracked with a real bass, I would try turning the bass up on that track instead, I have a feeling it's more consistent in equalization than the MIDI, funny enough...
I mostly do metal so I'm not sure anything I'd tell someone is appropriate unless it's metal, but that was just the one thing that stuck out to me, to me the balance you have on this track otherwise is actually pretty good. You've also got one or two timing issues with your playing, one near the middle of the track, but I bet you caught that already.
With metal, everything is full-on all the time, hardly dynamic at all unless you're in the right subgenre... that's pretty much all I know how to do, which your track isn't, so the thing with the bass is the only thing I'm really comfortable commenting on.