Frankensteins or Audio Note Kit 300b

Matt,
I believe you can't go wrong with either. The AN Kit 300b has earned a strong reputation(even more so when certain upgraded caps/transformers are chosen).There are very satisfied owners on this site for certain.

I've owned the Frankenstein Mark II for 6 years and I'm simply thrilled with it and have zero interest in replacing it. I truly feel you'll be happy with either of these SET amplifiers.If you can afford to do so, I'd get the upgrade output transformer and coupling capacitors for the Audio Note. The better parts really do matter.
Charles,

Matt,
If you're happy with the 16 watt 845 SET driving your Dalis then there's a good chance the 20 watt PSET 300b may also be fine. Again I'd suggest getting the best output transformers you can afford(and 4 ohm taps). Matt, as much as I enjoy the Frankenstein, It wouldn't be the best choice with your speakers.
Best of Luck,
Charles,

Thaluza,
That makes sense, 8 watts is hardly an universal solution for many speakers in the marketplace. With appropriately chosen speakers the amplifier will sing.

Congratulations and please keep us posted.