Ive got (4) 1050's and are caliber specific. If you are wanting to load alot of calibers on one or two machines, I would opt for a 650 mainly due to the time it takes to change the caliber conversion kit. Oh, and price is a huge factor between both of them. BTW, LOVE my 1050's!
Guess I'm slow as well as Im pretty anal while reloading. I load around 300 rounds per hour on my 1050. No bullet feeder though BUT I'm debating on whether or not to purchase one.
Ive used red, green, orange, and yellow. I found that (for me), RED was the color that most absorbed the natural light during sunny days and also most visible on rainy/gloomy days. Of course, everyone's eyes are not the same.
Ive tried several and finally chose the Contour Roam. One finger "on/off". Unfortunately, they are no longer in business but you can still find them online for sale. GoPro is also awesome but bigger.