Is there a retailer anyone knows in London where I can go have a play with acouple of keyboards with different switches etc to see which one I like the best? I don't wanna buy randomly especially on a £70+ keyboard! I work in central London (Holborn), live in SE5 post code if that helps, but I have a travel card I get free from work for zone 1-5 due to travelling in and around London a lot.