Welcome!
That is one beautiful instrument, is it the one that was on ebay for a while?
Out of my price range but they sure look the part..
I really like how these EB's give 'personality' to strings (if you can say that). My first EB0 felt good with the old flats
that it came with, and I put on D'Addario rounds just to give it a fresh set. It needed some setup adjustments,
but still felt strange to play. However, trying different sets (and landing on Thomastik Jazz Rounds) it was back on track, fast, easy to play
and just an outright pleasure!
It's a matter of taste (strings) for shure, but if rounds does not feel good on it at once, don't give up!