TM if you dont mind a plastic slide, will always works better and TM has a newer design compare the VFC (they are completely different system).
But have to say VFC is one of the best pistol they made, steel trigger group (the valve knocker/firing pin can still fail)
large rife type nozzle, which makes it works reasonable well in the cold and really well in the warmer months.
But mags are expensive and harder to come by.