Very bad compared to other Snark products.
Well, first of all. The hertz system is very uncomfortable to use, it only works for standard tuning, and in the correct order. If you break that order by mistake, it stops and you have to start again.
Also, the clip is less complex, having fewer parts, meaning that it is less likely to break, but it is less adaptive. It won't fit right in a slotted headstock, and will tend to slip
All in all, it's not a terrible tuner in itself, if you play non slotted headstocks and only in standard tuning it might be okay, but I don't see any reason to buy this instead of other good Snark tuners, like the SN-8, for instance.
ConsClip slips in slotted headstocks.
Hertz system is useless.