I love spesh bike shoes. They fit me like a....glove?
I moved from spesh to northwave and the shoe just didn't fit me well and the buckle broke too.
I've has spesh gloves but found they tore a bit too easily so stayed away from them. Also had a spesh airpump but the nozzle came off so swapped it for a Joe Blow which has been great.
Spesh tires, nah.
The bikes are pretty good though I don't like the geo of the Roubaix coz the headtube goes on for miles. And it looks so stupid.
Spesh bar tape is nice, s-wrap. I also roll with (gosh I'm full of it today arent I

) spesh inner tubes. Won't touch anything else. Buy in bulk, get discount.
Never tried spesh clothes but that's only because I don't like bike company specific branded clothes. Endura for me: cheap enough and good quality for the short rides I do.
Saddles: spesh, the cheap ones. One day I'll try a fizik. And that's it.
Edit: oh yeah and I once got annoyed with spesh because they sued some shop owner which had the name Roval iirc.
Edit 2: the noggin prefers spesh helmets also. Something about additional testing that other brands don't perform. But I think that doesn't apply to the complete range of spesh helmets.