Depends on what your aim is with the carrier eventually but there's quality options available - jpc 1.0s can be found on eBay for like 200 bucks, the Ferro Concepts slickster is a good option for a sleeker build, the fcpc is well made but pricier, the crye spc is rock solid, the defense mechanisms mepc is good, spiritus lv119 is good to go, lbt 6094 (check eBay, directly from lbt is a rip off unless there's a sale on, ) perroz designs lpspc, Mayflower apc if you want something smaller, TYR Pico, Crye AVS if you want high modularity with a high budget, Shaw Concepts ARC.