I was going to put in a French drain until I found out how much it would cost and from previous work I've done on breaking up concrete I knew I didn't want to do it myself. Then I started looking on the net for information and found basement gutters which serve the same purpose as a French drain and cost less than 10% of what I had been quoted. They are easy to do yourself and I found them recommended on another site not connected to the business. These are the two sites I found off hand.