Do you belong more to souce first or to speakers first school of thought ?

Both.  Both have to be as high of quality, for the least $ possible. Thats my philosophy.  I Sell gear, so I have hundreds of pieces. I regularly switch out components to upgrade and try different combinations. I have 3 racks:

1. a complete ADCOM rack in my basement shop - hooked to cornwalls and Bozaks 302’s. Due to size of speaks-i dont change this at all.

2. bedroom rack: Dynaco pas3x/ST70 combo & Yamaha MX830/CX1000 preamp; ads1230's & CalRad's 12" coaxials (amazing!); Onkyo C-7030; Tice conditioner; Akai digital tuner; Cambridge Black Magic 100 DAC; BT unit

3. downstairs BR/music room: Yanaha M80 & dbx BX-3(badass!!) amps; new to me: parasound pre 200; Onkyo C-7030; Yamaha T-1020 tuner, Akai TT w/Ortofon cart; Furman power conditioner; BT unit; Yamaha T-80 tuner; JBL L88 plus 12's w/brand new blue diagonal foam rubber covers that repacesd the orange quadrax & Monitor Audio Gold bookshelves.  

Note: Onkyo C-7030 cd players with the Wolfson dacs are the best sounding and most dependable 'mortal man money' models there are.  I collect them when i find them for $150 or less. I have 6 or 7 currently.  If you haven't experienced one, you need to.  They are the only cd unit i use.  

I’ve evolved LOL. Came back into the hobby through the angle of folks repurposing vintage pro audio as inexpensive high current power. That lead to signal processing but I was driving sub par speakers.

Fast forward five years and I’m a speaker devotee luxuriating in the market trend toward big baffle mid fi heritage speakers and fast small subs :)

@hilde45 and others.  I appreciate your humor.  Let's not be REAL serious about this.  Most us us have a decent to awesome rig.  For those in that category, it is upgrading the weakest piece.

That's certainly true, generally speaking, but first it is not always easy to determine the weakest link, and then by changing any component your change the overall balance, so you might upgrade but not get better sound or improve some aspects of the sound and make others worse. This is a form of art, I would say.

In my case, I think I know that the weakest links are cartridge and speakers, though they are not weak links, so I have no need to upgrade, only a moderate wish.