Hate to interrupt a great discussion but I wanted to thank you all for the input. Looks like what I'm going to end up doing is go back to the field to see what the mix of 72 mhz and 2.4ghz users is. If the number of 72mhz users is relatively low it sounds like the PCM system I have is still good, at least to get back into the hobby and especially with sport planes. I'll re read this thread a few times to make sure I understand everything but i just wanted to say thanks guys!
Haven't had time to do it yet but I'll look more into all of your recommendations before making any purchases.
Thanks again everyone, happy holidays!
By the way - it's looking like it's gonna be a revolver (haven't decided on size yet) coupled with an EVO .60 Gasser or DLE 20)