Slip - I had the felt sole/lug sole dilemma a few years ago.....I finally went with the felt, mostly because the ones I wanted with the lugs only came in camo, so I went with the felt to get the plain brown.
The debate was whether the felt held sand and got heavy. I have not experienced that, and am happy I went with the felt.
Of course, sooner or later the felt needs to be replaced, especially if your spots require walking on asphalt a lot to get to them (like the Service Road....
)......if the waders don't end up leaking bad enough first that Aqua Seal won't fix them, and I fear I'm getting to that point....had a VERY wet foot wading in Barneget Bay a few weeks ago
....
I hear it's not too tough to replace the felt.....hardest part is getting the old felt off, but we'll see when and if the time comes....