I’m im the same predicament. All these cool wheels coming out using abec core is annoying. Kegel is so much better imo. I was looking at onsra 115mm rubber wheels but i heard they don’t fit fatboy kegel adapters because the holes are slightly off. I love my 110’s but sometimes i need a wheel with a little more grip for wet riding conditions.
Depends on how much you inflate your pneumatics. My consumption actually decreased when I switched from the airless to Trampa 6.5" tires and inflated them to 50 psi. That resulted in overall better performance and slightly better comfort.
Then again the advantage of airless is that you don’t risk a flat tire and they last much longer. Also the price is cheaper.