thanks blokes. RickV, your advice is without a doubt the best here! harddrives comes in second! Nick, I thought of hiring but i always try and buy if i can, then if im not in a financial position to keep the tool I just sell it for somewhere close to what I bought for. Jerry, you are right about the Hilti over the Dewalt. this is the Hilti option. i think the only downside is that its a little longer overall.