The first one is the best, in my opinion.
Fitting in the 'R' doesn't work for me. There's too much there.

My initials are RKD, but that didn't work as a logo either.That's why I went with RD.

One clean line of the P going into the S works for me.

The 3D and the background work beautifully, for me.
You've done a fantastic job there.