Not particularly.
Bear in mind that the regular KoKen rails are nothing special - metal spring clips on a metal rail. They’re “o.k.” at best, but I’m not sure I’d use them on mirror polished Nepros sockets. In fact I’m sure I wouldn’t.
The KoKen Z Series / Zeal are much better in that respect, in fact better across the board. KoKen don’t make these. I’ve forgotten the manufacturer.
Personally, I’d use the Nepros. The pegs are the absolute best on any rail, and with the steel rails I think they are better quality than even the Z Series.
The only thing you really gain with the Z Series rail is the magnetic base, which is nice if you are using them in a metal box or drawer.