Bookshelf speakers for near-field (desktop) use

I am looking for a decent pair of new/used bookshelf speakers for near-field / desktop use. I plan to use this with my PC as the source. The speakers would go into a fairly small room but in the future, I may use these as a bedroom setup so it would be nice to have them be capable for both. 

I can power the speakers with either a PS Audio Sprout100, Anthem MRX510 or something I may buy in the future. I don't want to spend a ton on an amp to drive these speakers though. Budget is around $2,000. Just looking for great sound. I'm not a bass head so that's not a huge priority but the fuller the range in sound, the better. 

A few speakers that I have considered are: 

• Buchardt S400 - Are they appropriate for desktop use though? 
• KEF LS50 Passive - Used I can find one for around $800 or just buy new for ~$1,000
• KEF LS50 Wireless - Good reviews, but about the same price as the Buchardt's