Personally, I like the whiz-wheel. Use it all the time when I'm planning a ded-reckoned flight on the ground.
I'd never dream of using it in the air - mental arithmetic is perfectly good enough. Also wouldn't use it on a flight where I'm planning on using nav-aids (e.g. any flight in planned IMC) because the navaid will show your drift anyway. Bearing this in mind, I haven't ever seen the need to try out one of the electronic ones - I can't see the need.
Just my personal opinion, though. This is an area where there are no right or wrong answers.
FFF
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