The boss will be the one a lot of corksniffers would come down on for being digital, but I've yet to hear an actual gigging guitarist complain about one. And doubt at gigging levels, using run of the mill delay setting, any punter will know what they're listening to, just that it's echoey. Solid, reliable, good sound, will last forever. boss is also the gshock of pedals
The Carbon copy is the most authentic old school analogue delay on the list, so it will be very dark and organic (yes, i used the world organic), great decay, well regarded by those into playing pre digital era music. although i believe the max delay time is rather limited compared to the others at 300ms, but unless you're a Gilmour fan or playing seriously ambient experimental stuff, I wouldn't worry. MXR is another industry standard for construction.
The TC Flashback I've no experience with but I've been told is a great choice also, whereas the other 2 are either analog or digital, the TC is one of those digital pedals that models analog. apparently very versatile, doing a great approximation of analogy and simple to use. Follows the mxr type construction pattern.
It all depends weather you have star trek syndrome about your signal chain. Something to take into consideration is true bypass, but not for the usual corksniffer reasons as buffers can be great things. What i mean is when the pedal is off, I like the signal to stay analog.
Another choice, but pricier (with according versatility) is the Strymon pedals. I use the Brigadier (analog sim). Strymon are notable in how they model analog effects. They don't just attempt to replicate the output of a tape or analog delay, they model the analog circuit digitally. I defy ayone to tell the difference between a carbon copy and a Brig set up to sound like one in a blind test. The advantage of this is that the strymon gives you control over far more parameters because digital is adjustable. For instance, like all the characteristics of an analog delay except for the darkness (as i do)? great, then you can control how dark the sim is, i have mine set quit bright, so you get the unaltered presence in the initial repeats which decay away into that great analog mush.
Another thing I like about it that only the repeats are digital, the core signal is still analog. If in the event you ever use a line level effects loop, it has the headroom for that too.
Construction wise, up there with the others. Its a thick bent aluminium thick chassis and everything inside is bolted together solidly, with respectable thick pcb's. SMT construction, but most things outside of the boutique market are these days, including your selections above. What differentiates strymon is no other independent small brand is doing what they do. Most of the big brands aren't even doing it, can only think of eventide.. Not at that price point. Btw, if you're in the market for a reverb, check out the sound sample of the Blue Sky pedals shimmer mode on their website.
So obviously I like it.. lol and that's from a guy who won't normally touch digital (star trek syndrome).
Also, from your setup, I'm going to take a leap and say you keep it classic? Check out a deluxe memory man too