Who has gone fully active? What speakers and preamp did you end up with?

@daniel25  - Interesting that ATC lists the input impedance at > 10kOhms.  That does seem relatively low.  I'm used to seeing 25k or higher but hopefully it doesn't affect too many tube pres.

Already had the LTA preamp and just got ATC SCM19A actives. Added a Rhythmic sub and sounds pretty amazing so far.  

LTA is single ended out but no issues driving them with adapters - only a 2M run in my small room

If I was going to go that route I would go for the 

YG acoustic vantage series. 

Yeah it's not cheap, But if I had trade my current system 

That would be the one to get.

I love active speakers. 

Direct amplification and external, line-level analog crossover fits right in with existing systems (and concepts and beliefs). 

Digital crossover and DSP is incredible but... complicated.