Hi I used to use a Bladetec but found my knives did not hold a good edge, I purchased a Chefs Choice electric Sharpener it has three sets of rotating disks,
At first i was not impressed but after using it for i while i realised that i needed to let the sharpener change the angle of the blade. now i have used it a few times my knives have never been so sharp and when they do get dull i give them a couple of swipes and they are razor sharp again, The sharpened cost about £165 not cheap, but life is too short to spend time using an oilstone.