You didn't say but what bodies do you have in the Minolta system? I would keep the Pentax system if I have the KX, MX or LX. I had the XK in the Minolta system but I sold it because I found that it's worth a lot more money than I like it. The XD-11 I do like but not as much as the Pentax. The SRT are good and reliable but I do not like them much especially if I want cameras with meter.
The XE is every bit as good as the KX.
MX has some nice features and is pretty well build, but ultimately is not very ergonomic and is of course completely manual.
Super Program/Super A is my Pentax of choice, but just feels less well build than the X-700, and the 2000 speed is of very limited use. Especially since the flash sync doesn’t follow troop.
There is very little to touch the X-700 and XD-7/11 for crucial features like advanced metering, bright finder, smoothness of shutter and mirror and exposure hold.