You need to think about how you are going to use it.
If you might get into a precision rimfire game then FFP would be better over SFP.
If you are going to extend the range over 100 yards then think about a higher magnification.
Look into adjustable parallax.
MOA versus Mil.
Exposed target turrets.
Illuminated or non-illuminated reticle. We have some .22 precision matches that are in low light or at night.
Then see what is out there that fills your need.