I have the oppourtunity to purchase my first AR. My question is, which one? The first is a combo built with a Spikes lower and a Del-Ton upper. Price is $800. Second is a Bushmaster XM15E2S HBAR. Both have 16" barrels and both have les yhan 100 rounds. The bushmaster is $300 more but is only a 15min drive compared to a four hour drive(each way). Any imput would be great!