I am interested in buying a cordless kit, but not sure what to go with. Should I go with a Ryobi or spend more money and go with a professional brand like Dewalt or Milwaukee or Bosch. I just bought a new house and I am not in the trades, but want something that will last a long time as I will have to do a lot of work to this house. Can anyone guide me? Also where should I buy the cordless kit so I don't get ripped off?