As long as your connections are copper/brass/silver plated, anything will work fine with limited voltage drop. It really comes down to personal preference.
My Neme clone's button stripped out and won't go together anymore. Clones aren't always built with the same tolerances/materials of the originals, so don't expect exceptional build quality from any of them.
If you don't mind a heavy SS mod with a recessed bottom button, the Panzer isn't a bad choice. Neme's are hit and miss. I don't have any experience with the Caravella clones.
The good news is, clones are pretty cheap so even if you don't like it, you can grab another one and use it as a backup