It’s all personal preference so its probably useful to know what the differences are between SPD and other systems. What feels different with the Time pedals? (Presuming someone’s tried them both)
I went from SPDs to CB which have loads more float and easier to clip in and out of which gave me confidence on more gnarly trails (used to just ride SPDs on the XC bike). Despite this I missed the locked in feel of SPDs as the CB feel quite loose, and I missed the clear end of float feel. Went from that to Hopes and found a very happy medium. The entry and release is so nice and easy but they still feel lovely and secure, plus the bearings hold up beautifully. Best way I can describe the difference is that you don’t have to do the toe hook then stamp in quite such a defined way, just wave your feet at the pedal and you’re in.
As an aside I’ve always steered clear of non shimano systems which use SPD cleats as I figured that Shimano must be the most optimised, and IME the m520’s will outlast me.