Look on pinkbike buy sell, plenty of people have experimented then sell them on for less than £50 with very little use.
In my experience, having been an SPD user for over a decade;
Get the right shoe and the platform feels fantastic, it feels like a flat pedal but with no chance of slipping. Clipping in is easier than SPD and they don’t clog with mud so easily.
The way the mechanism works means there’s no chance of accidentally unclipping like with SPD, however this does mean you need to be more deliberate with your twist when you unclip.
The bushings and sealing are crap but I regularly grease them and accept the bit of play doesn’t matter.
And when it comes to shoes that work well, 5.10’s are awful in my experience.