At one point and time I have owned them all on various pistols from 22 up to my 460 and 308 handguns. I now own almost exclusively Burris LER's on my pistols. The one big thing over another that I have encountered is the customer service makes a HUGE difference!!!! Just recently I sent off a Burris scope and a Nikon.
I sent them off within a month of each other. I had the Burris back almost before I sent off the Nikon and the Nikon took nearly 4 months and TONS of headaches!!!! I will never own a Nikon again due to this.