Shame you can't go for floorstanders The KEF IQ5SE has plenty of bass if a tad out of price range.
You mentioned bookshelf - I assume your current speakers are actually on stands? It does make a huge difference.
NAD 515BEE, NAD C325BEE, KEF IQ5SE's, Silver anniversary XT, Chord Crimson interconnects.
Panasonic TX32-LZD80 and DMR-EX77EB