You may have bought two duds, but you are in the right place to be better informed going forward. I always wanted a Vane for a ultra portable on the go pocket vape, even if the vapor quality and device seems awful.
To replicate the affects you like from smoking you need a high temp and ability to deliver the amount of active ingredients. Since you have conduction devices, pack the oven tight and full. Heat can't touch the material if it's just flopping around in there or has a lot of air gaps. This is where I see people go wrong, and why a lot of people think they hate the Pax.
On the temps, just crank that to max on both devices. 415F isn't high enough to truly extract the actives, but the temp numbers are all approximate and not a good representation. For instance, my xmax v3 Pro gives high temp extraction at 371F. So treat the numbers as a heat setting and go from there. Get the material inside to coffee grounds color and decide/back off from there.
There are a lot of sales on right now for good vaporizers, and the xmax v3 pro is a solid choice that won't disappoint in the effects department. Personally, I feel 420edc has a great deal on this device in their bundle if you select the glass WPA and dosing caps. It's a beast through glass and can expend a dosing cap in a single massive high temp rip if you want.