I had the DMX Operator running in no time, with NO prior DMX experience and NOT reading the manual.
To each their own. I came from a successful run using the DMX Operator, so why retire it? I generally run my MacBook Pro with MyDMX on TOP of the rack that has the DMX Operator and the OptiBranch/4. Should MyDMX dump on me, I swap a cable and I'm rock and rolling again. In my case, I'm taking advantage of existing prior investment.
In your case, starting out, I see no valid reason to have to start out with gear that frustrates you. For me, I'm an audio guy, I needed quick and easy to use, and that was 7 years ago. The DMX Operator, I must say, was a wonderful choice. But now that I'm using MyDMX, I'm liking that so much better.
It really doesn't matter which way you go. But, one thing you're really going to love is designing your light show using the 3D Visualizer. Oh man, what a time, money and power saver. Yeah, it make a take a bit to get set up properly, but that time investment is worth it. I should spend more time on mine but I have too many other projects that are true priority.(read: they are making me money)
The MyDMX is a great product. Yes, there are limitations to it, but look at the price. And even so, look at what you get for that money: a TON of goodies. Oh yeah, I'm loving it. I'm using as a FOH/lighting console solution. My shows are very simplistic, but I'm quite happy with the product. It does what I need when and how I need it to.