Currently using polymer MBUS sights on a Barret REC7 DI 16" and I am ready to buy some sort of red dot or scope but lost in the amount of options. I am looking at the Sparc, Strikefire, Primary Arms, Sig Sauer Romeo and Holsun and can't spend $500 to get an Eotech or better. So whats the difference? Do any of them magnify or do I have to get a magnifier also? Is getting a scope with magnification better? There are so many options that I thought asking for some personal experiences would help. Thanks ahead of time!