If you are doing that amount of miles, then a Honda will serve you well as they have the best and most reliable engines, their parts are not that cheap though. If you are after economy and not to worried about looks then either an ER6-F ( faired ) or and ER6-N ( naked, but really ugly imo! ) Then of course there is the classic commuter in the Suzuki Bandit, a very solid bike with bullet proof engine. Stay well away from any chinese imports, they are cheap to buy but unreliable, hard to source parts for and insurance is more expensive. Triumph have also come on in leaps and bounds over the years and make some cracking bikes! Good commuter bikes:Honda Hornet Kawasaki ER6 / ER5 Suzuki Bandit Suzuki SV 650 Suzuki Gladius Triumph Street Triple Triumph Speed Triple All of the above are good bikes. Stay away from Ducati, their engines are unreliable and costly to maintain. BMW are ok, but there are none I would consider a practical commuter bike and again they are expensive to maintain.