Hi all,iv a job got with a a lot of insulated plasterboard fixing to concrete background. I have 2 bosch professional GBH2-23RE hammer action drills.They do the job for drilling holes for the mushroom fixings in your average extension/renovation but realistically they are not the most powerfull. Im wondering which drill would be most recommended for great power and fairly light to work with. I cant stand drilling a hole for 15-20 seconds. 5-7 seconds is enough.We need to be fairly moving it on this job........