Spyder XTRA is all stock. Ion has a blackheart blackheart, firebolt, QEV, CBQ roller, CBQ feedneck, dye grip. a bunch of other stuff.
Quieter than stock
lighter than stock
Not much so far. I have only tested it.
So i just received the firebolt in the mail and i was really excited because i was waiting a week for it. I was anxious to shoot it so i lubed it up and installed it. I first shot it and first thing i realized was that it was pretty quiet. Then i also saw there was no kick at all i was shooting without my ion moving.
Don't want to sound weird but buy it. You probably won;t reret it.