Do you have any more pics of the SP01 with DP Pro you did?
FF III is a very solid optic. I posted this on another forum when asked about my opinions on popular reflex sights as we mill slides and handle dozens of them daily.FF III. - Best out there for the money. Simply can't be touched for ~$250-$275. Most last many thousands of rounds +. If yours happens to die, Burris has no problem replacing them, no questions asked.
DP Gen 1 - Solid optic, be careful with the tiny torx screws stripping as it is a very common issue.
DP Pro - TANKS. The most solid optic I've personally had in hand and used by far. They haven't been out long, but I have heard of only one customer of ours having an issue with one out of probably about 30-40ish or so we've milled so far since they've been out.
RMR - I have nothing specifically against them, other than people have the misconception that since they're made by Trijicon, they're gods gift to reflex sights. And that's just wrong. They fail as much (more in our experience from reports) than the rest. Maybe it's just that they're more popular so naturally we will hear of them failing more, I don't know.
Various C-More's - Same stuff you hear from everyone. Hit and miss. Some seem to be unkillable, some crap out quickly.
The rest out there, we haven't milled very many, nor do I have a lot of experience with them to comment.