I'm purchasing my first AR, I'm looking to spend about 800.00, my local dealer has a CMMG M4 with Magpul flip rear sight for 799.99. I just don't know enough about the CMMG rifle to really go forward with the purchase. My friends keep telling me to get a Spikes Tactical M4 because it's Battle Proven. Only problem is the Spikes rifle will take 3-4 weeks to get delivered and I really would like to get my rifle right away. (instant gratification, yes I'm selfish) So what do you think I should go with? Spikes M4 or CMMG M4? Both cost about the same price.