I've been looking at the technical data and user manuals of both the Sekonic and the Gossen. What strikes me is that they appear much more complicated, and less intuitive, than even the most complicated analogue meters like the Lunasix F. Seems like you have to have the manual with you....
Sekonic 308 here. I've had it 15 years or so, and it's just about perfect.
I'm not sure how you could consider it complicated. Assuming you want it as an incident light meter, you switch it on, hold it, push the button, and you're done. It shows you on screen, for a given ISO and speed, what the aperture should be set to. That's it. There are up and down buttons on the side which change the speed, and if you hold the ISO button down and press them, it changes the ISO instead.
It remembers the last settings when you switch it off, so my meter is set to ISO 100/60, and so I just push a button and get an aperture.
It has an EV mode instead of aperture and speed, and two flash modes. I've never used these, so can't comment on how they operate. There is a slide thing to convert it to reflective vs incident mode, which might come in handy I suppose, but i've not used that either.
So for me, it's a one button device, runs on a single AA, can't imagine it being easier to use or more perfect as a design.
(edited, just realised you choose the speed not the aperture, doh)