Wheel Security Nuts

Have just acquired a 2002 corolla T3, and the wheel security nuts that came
with the car were in a box and not on the wheels of the car.

They are an older type of security nut with three 'short-depth' holes and an
'unlocking' socket that fits over them. I notice later Corollas have a more
secure 'circular' type lock on their security nuts.

They are nice, five spoke Toyota Alloy wheels in good condition. There has
been quite a lot of thefts recently in this part of north London.  A lot of
activity like going into cars and stealing from garden sheds and manhole
covers, etc,etc.

If possible I would prefer not to spend out the money on the better circular
lock type nuts at the moment.

Am I relatively unlikely to loose Toyota Corolla wheels, since it's often
considered a staid motor, Or should I fork out for a set of the more secure
circular lock type nuts?   Thanks.