I had the same dilemma 2 years ago, when I bought a desktop Evolver. Went with the Vyzor editor, because it looked so damn sleek and sexy - the screenshots have blinded me
Since then I fired it up a couple of times, and each time had to read the manual (which is huge btw), because the thing is so complex and un-intuitive. Besides, Psicraft (the developers of Vyzor editor) keep pushing the release date of version 2. At the moment, their website proudly states: "Vyzor Evolver 2.00, the highly anticipated upgrade to Vyzor Evolver will be officially released in April, 2009"
. Oh well..
just my 0.02$