i too was going to state that STAG makes lefty AR15s. as well as stag making good rifles. i have to and have only had one jam. that jam was due to an old magazine. if you are not interesting in takin the time to fiddle with, and make accurate the mini14, i say go with an AR. there are lots of good companys, lots of good ammo, lots of parts. you can have a great shooting rifle for $1000 or less as long as yo ushop around a little. might even make sense to build one. i hear its not too diffacult.
colt, stag, Rock River Arms, Daniel defense, Palmetto State Armory make great rifles. some that do the job but are rated aslightly less would be S&W,ruger,DPMS,bushmaster.
pay the money get something good and you will not regret it