Togekiss - gives 3 prizes, doesnt hit anything for weakness, 60 less damage, worse V, rotates come august. but it can attack for a single attachment (DTE), can loop with cherens care, does have 40 more HP, isnt weak to fighting like magnezone (kind of relevant)
magnezone hits upcoming palkia vstar for weakness which will be very relevant, as well as suicune. it is limited to items but items can basically search out anything else so its still fine. id give magnezone the edge. being able to 2 hit vmax unlike togekiss is huge. Also one less prize is huge. And the VSTAR power adds some sniping flexibility to KO weak bench mons if necessary.