ATC SCM19 mk2 or new SCM20 (when they're released); don't worry about their size, they won't overpower your room with bass.
Or maybe a Magico Q1, if cost is really no object.
If you're interested in the subject you may want to read these articles.
http://lenardaudio.com/education/14_valve_amps_7.html
http://lenardaudio.com/education/05_speakers_3.html
The speakers are built to different Q values (their inherent damping). A low Q speaker (critically damped or overdamped) will not need the electrical damping offered by an amplifier with a low outuput impedance (high damping factor). Such speakers are ATC which are overdamped IMO, but they are...
Dynaudios need an amplifier with a low output impedance (high damping factor) to control them, which means solid state; most tube amps have a high output impedance and can't control the woofer motion; it isn't about the power. For the Jadis I'd look at overdamped speakers which need little...
An amplifier has the current reserves or it doesn't. Most loudspeakers impedace fluctuates with frequency and the lower it gets the more current it sucks from the amplifier.
Transistor amps try to be a constant voltage source, that is, to maintain the voltage constant irespective of the load...
egoBen, you should try the Zingali bookshelfs if you can, these are very easy to drive and not boomy.
Also, if you don't mind the plain black look, you should try the Quested H108, very easy to drive and not boomy as well.
The i30 is too laid back and not very detailed for the Dyns; they need a lively, sparkly, perky etc amplifier to weak them up, otherwise they'll sound dull.
For your budget I think the Cambridge 840A V2 is the best option to move your Dyns.
Better go with the V2; there are two dealers on Audio Markt that sell their demo units.
http://www.audio-markt.de/_markt/item.php?id=4394468405&
http://www.audio-markt.de/_markt/item.php?id=8510242515&