is it worth it to you?

Hello, this is my first post. I was happy as He!! to find this place and spent a lot of time reading. As a owner of both the x-mod and the mini z I can easily say which is best. Or at least until I got here. I have EVERY mod you can make on the X-mod from Radio Shack. I had NO, and I mean NO idea that you could do the things I have read here. SO My question for you is....... After these mods are done (like the "R-tune performance" package from http://www.xmodspeed.com/product_pack.htm . Are the X-mods a good fight for the mini z's. I have a read a few post and the only thing that I could find that was close was when someone said that he/she was going to ad a gas powered motor (good luck with that one). Does anyone else have both and had a chance to compare?