I'm not a big fan of those so called "wideners". To my ears they sound like a nasty phase shifter most of the time, which is what they are.

To get a better sounding W I D E track.... just record the same instrument exactly the same on two different tracks. Hard pan each one 100% opposite the other. I use this quite often (although not recently) on acoustic guitars.

As far as using a delay to make a solo pop..... no thanks. Again, just bring the solo instrument up in the mix and remove everything else that is not necessary. And I do mean everything. When you have a solo instrument up front with the rhythm section holding the groove and maybe a B3 bubbling low in the mix, or a clean electric guitar down low, it's gonna sound good and be easy to hear everything.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.