Definitely the ZX, less heat needed on the pid, smaller bowls, any 14mm glas adapter can be a good bowl, the taste is insane, nearly on par with a lotus.

Although building it was a pita because my 220v coil did had a too tight fit. In the end it worked out after sweatin for 30 min. Thinking this tiny 160$ thing would break in my hands.

Edit: oh and I had to build my own coil handle because I forgot to order a 2nd one, now the ZX has a much more personal touch and attachment to me thx to that.