I tried Orion v2, bully and willpro. Also briefly had a Genesis LV. The Orion that I had gave me a really hard time and I was only able to make it work sporadically. Dislikes with that (other than my lack of facility with rebuilding) included the Poly Tank. I felt afraid to use some of my fav juices as I didn't want to crack the tank and be without my PV until a replacement came. Also felt that having an independant atty was better so that I could use with different PVs. The willpro was easy to build but, again, the Poly tank annoyed me and I sold it. 2ml capacity was a drawback for me. The Genesis LV worked fine but was aesthetically a mess - looked cheaply made and sat kind of crooked. The Did was the first Genesis that I've tried that wicked properly, rarely got hot spots, and gave me the flavor that I was looking for. I have no difficulties with building and wicking and do think that this comes from the design. The capacity is great - I can be on the go with a few batteries and my tank with no worries.
Please keep in mind that others who received the Orion and other Gennys didn't have the same difficulties as I did -- not slamming them is just my personal experience.
