I've had my Prodigy Advance for about two years now and I love it. I've never used NCE, but I did have an Atlas (Lenz) for about six months, and sold it as soon as I could. The PA IMO is far superior.
My layout is 15x19 doubletrack with a 5 track yard, a 4 track yard, 2 passing sidings, 7 industry tracks, and interchange, and a 9 stall rounhouse with 2 5 foot engine storage tracks. I currently have 11 locos on the track (which is actually low), two of which are 2 or 3 unit F3 and FA sets, and all of which have sound (BLI or LokSound). My PA is bone stock, with no boosters, not even the upgrade power supply, and I have never had a lack of power issue.
I usually operate alone, but occasionally have a freind or two over. I can have 2 or 3 running by myself, or 4 or 5 if I have company, any more than that, and the layout is too small.
I would at some point like a PC interface, as I'm an IT Analyst by trade, but the intuitive programming of the PA is really easy, so it's not a big deal right now. The PA uses names for common CV settings like "starting voltage" = SV or 'acceleration" = ACC, instead of making you use CV numbers.
Wireless would be nice, too, but I made my own plug in extensions from CAT5 network cables and 8 pin telco unions and splitters, so now I have 3 stations with 2 plugs each plus the base unit, and with 8 foot cord and memory, I am fine.
I'm not knocking the NCE at all, in fact I think their decoders are the best for non-sound smooth slow speed control, and I wish they'd make a sound decoder.My PA has just been wonderful for me and my style.
Good luck, and I'd love to see photos or a track plan of your layout.