Trying decide

Hey guys currently I own a Smok RPM C and it sucks, the flavor on the E-Juice doesn't come through very well and the coils burn too fast. I'm thinking about switching to maybe the Oxva Nexlim, or Oxva V-Prime and between the Vaporesso Xros 4 or 5. I want to be able to rewick the coils for economical purposes, or even going after a rebuidable I have owned one previously. Question is have you re-wicked the coils on either the Oxva Nexlim, V Prime or the Xros? Better yet, can you? How did it go? Help me decide