Good luck with both -and, oh yeah, I almost forgot:
Welcome to the Forum!
I like big cases b/c I have big hands and big tools. I consider a big case that is self contained to be portable, though not as readily portable as some of the smaller ones...
I asked about your coctail b/c I am firing up a system with a UV sterilizer for the water. I am also looking into other additives for the water.
edit: I guess Dr_Z got what (or more than) he was looking for.