Best amps to use for the Dali megalines

Dali has been pretty specific about using the same amp on the bottom as you have on top.

I'm running Merrill Audio VERITAS mono amps on the bottom & a PS Audio BHK Signature 250 amp on the top with a asi-tek 'transformed' Behringer DCX2496 crossovered at 700hz at 48db brining them together.The sound going from my Megalines is by far best I have have/heard in my 30 years of audio. So sweet sounding with such spooky imaging it's scary! You cannot beat a floor to ceiling dipole ribbon period. I will be enjoying these for many many years to come.

Hi,

Four identical monoblocks drive our MegaLine III loudspeakers.

Best,

Sam

Oh, forgot...congrats on your acquisition -- I wish you innumerable hours of musical bliss.  :-)

Hi there

Thanks to everyone for their valued opinions and thanks c1ferrari - I am truly blessed!. I will probably put the ARC ref 750's on the dipole ribbons, and with the TAD active crossover I am hoping that it is less critical to have 4 identical monoblock's (can't afford another set of 750's anyway, first set nearly ruined me!) so was considering the Jeff Rowland 825 stereo amp which seems to have good write-ups and comments. Any thoughts? 
PS - which cables in order of importance would you spend more money on, power cables, interconnects or speaker cables? Would appreciate any opnions or feedback.