I have never seen and compared one to that isn't blemished....but is it just that they have visual imperfections such as scratches, nicks, etc or do some have holes that are not lined up for any pins???.......I've seen some Aero Precision blemished lowers for around $65 and some Anderson blemished lowers for around $42.....Is a blemished lower worth it or spend like an extra $50 for a Spikes lower or one from another manufacturer that isn't blemished?