I've been heavily exploring this. Have been in RC for 20 years and using lipo batteries for the last 15. All of the wireless systems frustrate me in some way be them DCC, DCS, TMCC/Legacy. I see no mention in this thread of Railpro. I have been looking into them but am concerned about smoke and the steam sounds are limited right now. However their radio speed matching and the way locos communicate with one another in consist is nothing short of amazing.
Haven't pulled the trigger on anything yet and have two PS1 conversions I have been stalling due to indecision. I don't plan to put the battery in the loco though.