Floor to Bookshelf

I have a pair of Wharfedale Diamond 12.4 towers that I like but are simply too large for my listening position. A smaller pair of floorstanders would work just fine, but since I presume I will one day be moving everything into a smaller listening space, I'm thinking of taking this opportunity to move down to standmount speakers. 

That said, I'd love some recommendations for a pair of speakers that would still feel like an upgrade in sound. Non-fatiguing detail is most important to me, as is imaging and soundstage. Right now I'm looking at the Dynaudio Evoke 20, but those are a bit pricey. I'd like to spend less if I can but the budget is probably $1k-$2k.