Grips are cheapish
No mechanical safety (personal preference)
Should have adjustable trigger and sear
In all honesty I wanted a frame that would swap between my Victor and my Maxis until I make a final choice with which to keep. The 32 degrees frame is of solid design, works well and gives a decent enough sear height to be swappable between both markers. This to me means greater compatibility with other spyder clones. It does require an angled hammer/sear catch (although this may only be an issue when using it on VL markers which have a flat face sear catch mating relationship)
I like the adjust-ability as I only have a gravity feed hopper at this time so Ican tone it down to fart around in the back forty and not blend paint. Then when I do upgrade to a e-hopper I can tune it accordingly.
The stock trigger is fine with me - it's wide enough I added a set screw to it and now it has only the slack I want - this why I added modability as a strength ... as a tinker I can see a ton of options for this frame.
Overall fit and feel is perfect as the grip/trigger relationship is not too far apart as to feel bulky ... the frame is actually about the same size as the VL pro series grip but as the trigger sits closer and the overall shape is more rounded even someone with small mitts like me will find it comfortable (my grip frame is the same as the third picture uploaded) and, it actually looks nice as a bonus. Honestly the only thing at this time that I don't like is the grips themselves ... a rubberized set would make this frame excellent.
modes on mine are
Semi - adjustable rate 4-20 bps
Multi - adjustable balls per trigger pull 1-20 balls
Turbo - adjustable rate 4-20 bps firing the number of balls per pull as set in Multi mode
Auto - adjustable rate 4-20 bps
it also has a timer, ball counter, and an auto-off option
my personal opinion (I know I'm still pretty new to PB, but I have extensive firearms experience) is it is a solid, comfortable grip with a few flaws that are fixable, it's not perfect but it is easily worth what it costs, I'll give it an 8 mostly due to the poor quality grips if they were better it would be a soild 9 (I can't imagine anything worth a 10 yet)