I have still got my ELU Diamante 110 v 1300 watts with rcd on the cable, i have cored 100's of holes with this mainly 117 & 127 it is still going strong even lending it out several times, had a new cable that's all. Dewalt took over ELU but i think they still make it albeit yellow in colour. It was a good investment along with the MIT88 wall chaser & extractor to go with it. Boy does that take away the chor of chasing out. A good dedicated core drill would cost between 3-4 hundred quid from new if you are going to use it on a regular basis.