(Old) Pro-tip here. The regular brown rawl type plug works fine a lot of the time, but you want one with thicker plastic... and you don't necessarily need to p

(Old) Pro-tip here. The regular brown rawl type plug works fine a lot of the time, but you want one with thicker plastic... and you don't necessarily need to pay more for it. Secondly in response to you point above...use a 7mm hole, not 8. It should take anything from a size 8-10 in good materials and a 12 in rubbish materials like soft brick. If you have problems some other tricks are to put a red plug inside the brown one, or drill a 5.5mm (red plug size) hole and stick a brown plug in it. Most builders won't buy the nice Fischer ones for you, so have to improvise... For places where you have a drywall dabbed to masonry you can have significant lateral movement between the plug in the masonry and the thing you are fixing on the outside of the plasterboard. That's where long plugged fixings massively help, where the plug reaches right through to the face of the dry lining.