Matt, our group uses the Digitrax 8-AMP Super Chief, specifically the DCS-200 and additional 8-AMP boosters (DB200) to power the layout. Decoder Pro is a great application has many very useful capabilities, one being the software interface to the command station which opens up possibilities like you mention with the smart phone.
What's been said here in terms of finding the system that works for you is absolutely the right approach. IMO, you can't go wrong with Digitrax or NCE it's finding the one that works for you, others in the area use it, and hopefully a local dealer carrying the system components at a decent price.
While DCS does hide/mask the whole CV configuration interface in DCC many system manufacturers are starting to do that as well by using more meaningful or friendly names.
I really am impressed with the PS3 locos I've purchased, and I was shocked to see MTH included in the instructions on how to consist locos together and achieve the same lighting effects as what you get when you consist locos together in DCS. For most DCC systems this is a fairly complex operation.