If I understand your post correctly, you've tried the eGo CE4 PLUS V2 Clearomizer by Royalsmoker/Microcig, also known as Ego Vision, Stardust, CE4+. I have never had much luck with those. They are top coil design and not the best one, IMO. If you get burned taste, it just means that your coil is dry because the
juice delivery to the coil is not working properly. You may try to tilt it, but sometimes, with this model, the wick is pinched and doesn't work properly. There are some workarounds to deal with this issue, like removing part of the wick or cutting slits in the silicone cap holding the wick, but I've never tried them. A forum search might help. Also try Youtube--there are several videos about CE4s.
If you're having problems with this design, you may be better off getting some of the BCC (bottom coil changeable) clearos like Kanger T3 or Evod, or an eGo cc (changeable coil) clearomizer. The latter also has a top coil but I've had no problems with dry hits; they wick well.