I thought the Orangutans O/96 will go well with SET amps (8-10W), is that not the case ? That would be sad, if so I will not bother with the Devore. My prime interest in this speaker would be to get a chance to try out SET amps and see what the fuss is all about.
Essrand, as you have seen from the responses an SET might be a very good idea to try out with this speaker. A lot is going to depend on your room- in a bigger room you are going to need more power and an SET may not work so well then. Generally to get the best out of an SET you want the speaker to be very efficient so that the amp does not make over about 20-25% of its full power. That way the low distortion/inner detail of the amp will be best shown off.
We have customers running that speaker too, so from our point of view the speaker is very tube friendly, enough so that a small OTL works just fine on it. The speaker is pretty revealing, so whatever amp you get, you will want to give it your best shot.