I find them actually to be pretty similar sounding to the 1.3SE, so if you like them, you'll surely like the 1.4 as well.
Typically contour-range Dyaudio. I compared the 1.3SE and the S1.4 back to back in a well setup room at the dealer, and I ended up with the 1.4 mainly because they are just the current model. I'm sure there are suble sonic differences between them, but they did not show through a several hour long audition with A/B.
They can be forward sounding like any other Dynaudio if they aren't setup right - but it sounds like you're already familliar with the Dynaudio thing.
I think their unusual cosmetics keeps them from being one of the most talked about speakers, but I don't think any of the big companies makes a better monitor for less than $3k
