KE and DT175, sound like exciting exhibits
Exciting, or historically interesting?
Maybe the KE is a bit obscure, but the DT is a good representative example of a 1970s trailbike.
Whether they give you a chubby or not, such bikes are an important part of motorcycling history - while something like an Ossa Phantom is immeasurably sexier, it also has much less historical signifcance.