Ecal is definitely the way to go (I shoot both Excal and a compound) ease of maintenance is a big plus. Their customer support is great, if you ever do need it. They are uncomplicated and accurate albeit a bit wider than compound.
I'm shooting carbons that I make up myself. Gold Tip Lazer II's with 110 gr brass insert and 2" Blazer vanes. Tipped with 100 gr Slick Tricks mags (smallish 4 bladed fixed) I get awesome accuracy and great terminal performance. Carbons seem to be give me fewer problems and are relatively easy to make up and fletch.
As for scopes, I'm shooting the Excal LumiZone on both bows. Great field of view, 5 aiming points from 10-50 yards that calibrate to your bow's speed. And a lighted reticule on demand. U've gotten good service from both of mine. But, they are a bit heavy, like all scopes. I've been looking with some interest at the Burris Fastfire reflex sight. Zeiss Z point is also of interest but costs more than twice as much.