handheld or laptop scanners

[iceeee]

hi have 3 vauxhalls in household now 02 astra 05 vectra sri 58vectra elite
which is the best scanner to purchase for diagnotics on these the astra is 1.6 petrol and the vectras are 1.9 cdti any input appreciated

[Factory Pilot]

I recently bought an Autel GS500 to diagnose a stored fault code, but It did not find anything. Whether this is because only Tech II can be used to gather stored codes I'm not sure.

But this one can read some of the CANBUS info which is nice.

Either way I have heard from other users on this forum to ovoid Op/Vaux-COMM rip offs as they can damage your systems?