Replace stick and ball-top

[fba]

Hi all,

I'm narrowing down which sticks I want to use in my control panel, and have come across an interesting quandary.  I would really like to use RGB lighted ball tops like they have at Paradise Arcade (http://www.paradisearcadeshop.com/), but I think I would prefer something like the Ultrastik 360, or maybe a servostik from Ultimarc (or something like it).   Is it difficult to replace the stick and ball in the Ultimarc gear?

I'd also love to know if anyone has any experience with the Paradise Arcade stick.   How does it compare to some of the other sticks that people have used?