If you have the means or can borrow a Tube amp to test with, you may be pleasantly surprised with what you are going to hear. I ran 2CEs with both SS and Tubes and always felt that tube amps gave them the midrange and stage that made them seem like much larger speakers. Sure, unless you get a larger tube amp the bass may fall off a bit but the midrange quality makes up for it in pleasure of listening. I compensated for the bass db loss by placing them just a bit closer to the front wall. Or, you can add an economical sub and cross it over around 40hz to give your system full body without being boomy.
Hope this helps... Vandi 2s are keepers. :)