Hi guys, im a plumber and have been looking around for a hammer drill. Ive looked at many different options and have brought it down to a few. I need a drill that can do a 1" hole through concrete and other masonry products so i have found a few drills that specify that they can handle it. Ive been looking at the: Bosch GBH 2-26 DFR - http://www.toolstop.co.uk/bosch-gbh2-26-dfr-2-kilo-rotary-hammer-with-sds-plus-shank-240v-p2969 Bosch GBH 2-28 DFR - http://www.toolstop.co.uk/bosch-gbh-2-28-dfv-2kg-sds-rotary-hammer-drill-with-quick-change-chuck-in-l-boxx-240-p16274 Metabo UHE 28 Multi - http://www.toolmarts.com/Metabo/UHE28-Multi.html Metabo KHE2850 - http://www.toolstop.co.uk/metabo-600656000-khe2850-sds-hammer-drill-240v-with-3-jaw-chuck-p16097 I really like the two bosch ones. they are quite reasonably priced and have some nice specifications and should be able to handle pretty much anything that i will see on the site. Has anyone had any experience with any of these drills or any advice when choosing a hammer drill?