After some investigation, my choice is going towards the Excalibur, love the Hegner very much, got one for the last + - 15 yrs, but the top arm do not lift up for the Hegner, quiet inconvenient for bottom feeding. The Excalibur , the top arm can de raised and very easy for top feeding. I took notice since I change the quick clamp with the big knob on the blade holder, the blades breaks more often., because the screw on top of the blade holder need to remain tighted, but with the old method, using the key, the top screw can be release about a quarter turn, to let the blade ocilliate easier.
For the Excalibur, does the blade clamp remain tighted or it can oscillate easily. I have'nt seen the machine yet, because we do not have it in Belgium, will have to order it from France.
Just need some info about the blade holder of the Excalibur, thanks to all you for your advices.