Monte makes a good point on notching. Unless you have a wide range of notches, like on the XLT (190 notchable segments) you can get into trouble with it. Even the Garrets with 24 segments, don't offer enough resolution IMHO.
Comparisons to the ACE 250 are inevitable, I'm certain. It set the stage for this, having been the first "high tech," low cost detector available in recent times. By virtue of that, it has been around the longest. Personally I am not its biggest fan. It's okay, but I inevitably reach for something else when I head out. It'll be cool to see what this Coinmaster offers ( I like the "Coinmaster" name, too. The first Whites I ever had was a Coinmaster Classic III)
The lack of a rod-lock is a nod to manufacturing simplicity, of course. The ACE doesn't have one, either. In fact many of the detectors Ive used over the years lacked that feature. Having progressive discrimination is also a part of the simplicity - anyone who uses Tesoro detectors will be at home with the Coinmaster, immediately.
The color choice is designed to do one thing - appeal to newbies. Black is out if you wanna attract little kids and soccer moms.
As for refinishing your other Whites', Monte, I know a guy who does some good paint work - -