Regarding EZ-wheels: People used wheels for inline-skates or alike before the EZ-wheels were created - basically this works. Some do it still today because they are cheap. Two Problems:
1. Those wheels are a little wide, so you may hit them with your heels when pedaling.
2. Those wheels are very robust. Thus over time the little metal wings on the backframe where the wheels are attached may suffer more easily from fatigue or break more easily, the latter if the bike get's dropped on the little wheels.

The originial EZ-wheels still are the best choice in my opinion (though expensive). 3rd party alternatives may look better or be cheaper and may be just as good - or not. Give it a try or you'll never know. No risk no fun...

Still the EZ-wheels have nothing to do with spokes of the front wheel hitting the frame when folded - this simply should not happen with or w/o EZ-wheels.
What may happen is the front-wheel spinning when rolled in trolley mode. This is to a degree normal and a bit depended from which tires you use and how the little hook on the front fork is bent as well as from the load and how it is leveled and of course if you have a rack or at least mudguards or not. No need to worry. But if spokes hit the frame there is something wrong that should be fixed if you ask me - you should be able to turn the front wheel freely in trolley mode.