I have a couple of used WBX heads I wanna pull the valves out of for a look see.

What have you used with good results to remove the valve keepers?

Generic "C Clamp" valve spring tool
http://www.zdmak.com/wbstore/main.asp?action=PROD&PROD=AW-89409&CTMP=1&LowCt=0

or

EMPI/CIP1 style bench lever tool like this one?
http://www2.cip1.com/ProductDetails.asp?ProductCode=C26-000-129

or something else???