Recos for entry level Bookshelf speaker $400-750 for 21yo nieces first system?

Own the PSB Image B4's and they are very impressive sounding small speakers. Fit and finish first class. Used under $200 pr. if you can find a pr. for sale. Rear ported.  Check out the Imagine Mini as well.

Anyone heard these ELAC B6s?

I went to the Newport Beach audio show and listened to a ton of very high end speakers.  Then I came to this one room with Silverline Audio Minuet Supreme speakers.  I was blown away how such a small speaker could sound so good.  I ended up buying my son a pair of the entry level speakers for $600.  He absolutely loves them and they are small.  I then went to the Elac room which were super highly touted.  I thought the Silverline speakers blew the Elac's away.  The Minuet Supreme had a little more richness in the sound.  You should at least do some research on these speakers.  For the size and cost, I think they are great.  I think they are $700.  They are out of California.  

I have been watching for a used pair of the Silverline Minuets. If I was looking to spend $700 I would purchase a pair of the new 'plus' models. As willgolf suggested, research these.