hi,
looks like a solid high quality speakers for sure. those goodmans horn drivers are top quality. as for the sellhurst, i've heard of them, but never seen them in person before. one of those british company that was never popular over in america. anyways, i can imagine their quality as equal to goodmans, wharfedale, and etc.
as for finding an amp for them, i would highly recommend tube amp. you really don't want to pair them with harsh unstable solid state amps. even low powered tube amp will do those speakers justice.