I like your Dalis a lot, and easily preferred them over the 802Ds... That said, I also preferred them over the more expensive MS5s you are looking at too... So my tastes may be different than yours.
In the MS5s price range, I would take a look at the VonSchweikert DB99s (tremendous top to bottom sound, combined with high efficiency), the Tyler Acoustics Woodmeres (big sound, and big bang for the buck), the already mentioned Merlins are an excellent choice (not as much low-end extension as the other choices or the 800s, but super-high resolution 2-ways), and possibly the Legacy Audio Whispers might make a good change (they sound very different from the others on the list though). If you want detailed information as to my impressions about any of the above please feel free to email me.
Good luck,
---Dave
In the MS5s price range, I would take a look at the VonSchweikert DB99s (tremendous top to bottom sound, combined with high efficiency), the Tyler Acoustics Woodmeres (big sound, and big bang for the buck), the already mentioned Merlins are an excellent choice (not as much low-end extension as the other choices or the 800s, but super-high resolution 2-ways), and possibly the Legacy Audio Whispers might make a good change (they sound very different from the others on the list though). If you want detailed information as to my impressions about any of the above please feel free to email me.
Good luck,
---Dave