I bought a pair of these Wellgo magnesium pedals for my Magnum Ui5:
http://amzn.to/1Suy5BJ
I use them with some Five Ten bike shoes that have a sole that really grips the pegs on the Wellgo pedals:
http://amzn.to/1MvUfje
I immediately noticed a big difference with these pedals compared to the stock pedals on the Ui5. It was like my feet were glued to the pedals, so I could easily and confidently apply much more torque to the pedals. I found I was often in a higher gear going up hills than before and of course this meant I was getting more exercise, and my motor was less likely to bog down from going too slow up a hill.
Also I can spin much faster with these pedals, so instead of spinning out at about 28 mph in the top gear, I can effectively add speed up to about 34 mph just by spinning faster. Before my feet would feel like they were going to fly off the pedals at the higher spin speeds.
Given how well these pedals and shoes work for me, I will pass on using clipless pedals and avoid the problem with forgetting or failing to unclip at a stop.