My N5 charges great (and quick) on the google N5 qi charger, and doesn't get insane hot, it can get nicely warm, but not what I would term hot.
That's why the Vu was such a shock and surprise, it literaly was HOT, and charging should NOT ever get that hot, it's not good for the electronics and it's not good for the battery. If there are Qi chargers out there that it's considered "normal" to get as hot at the Vu get somtimes, it's not a "feature" it's bad design/engineering or not fit for use.
I got a stupid good deal on the Vu charger ($35 new shipped from them) and I've found a way that it charges for me with out melting my phone so I won't return it. But, if I ever got a Qi charger that caused my phone to get that hot every single time, it would be returned as defective or not fit for use.
The nexus 5 qi charger may cost a bit more than many, but it chargers correctly.