My first serious setup with a pair of Paradigm Studio 100's with an Onkyo receiver (before that the Logitech Z5500 which I wouldn't call "serious") - I haven't got the heart to sell these so they're being used by my folks.
I now run a pair of PMC Twenty.21 speakers which I enjoy far more, they are much more agile, bass like a floorstander with zero bloat - I like them than much more expensive B&W Diamonds and Focal Sopras. Soundstage is decent once your room has been calibrated, tonality also a bit bright without adequate treatment. Running with a Lampizator tube DAC, Audio-GD pre-amp and PrimaLuna power amp.
While I think the PMC's are great, they are a pain to "reset" for home threatre use, and sometimes I do wish the sound was more neutral and with better imaging. Best in that regard I've ever listened to was a pair of MBL 101E speakers, with MBL monoblocks and transports, costing over $500K, something which I can never realistically justify unless I won first prize on Powerball.
Going to the Munich High-End Show made me realize you don't have to donate your kidneys for good sound. Some great value stuff comes from newer companies trying to make a name of themselves. There was the Osborn (an Australian company), their flagship speaker costing only $20K which was apparently sold to the Sultan of Brunei to replace his $300K setup when his servants scoured the globe to find the "best" speaker with an unlimited budget. And oh boy they do sound good and I can afford it!
I'm now saving up for the Osborn speakers, also in the process of replacing my entire setup with Audio-GD, they are no brainers for anyone wanting to break into high-end.