[Closed] Bike security locks, chains, stretchies, padlocks and locking techniques?

My shop bike has recently had a few new parts added that I got cheaply and is now quite a nice bike in it's own right.

So I'm thinking it's time to upgrade my security and thought I would see if anyone has any info on good ways to secure my trusty shop bike, as well as get an idea of what chains are available.

Currently I have a wire lock with a reinforced layer ontop 20mm thick, this goes through my back wheel and main frame then through something suitable to secure those, then I have a stretchy lock that goes through my seat main frame and front wheel.

Can anyone recommend any good quality but not too heavy locks and also are there better ways of securing my bikes?