I love both quartz and mechanical watches although I'm pretty much uniquely wearing a 50 year old handwound watch at the moment.
However IMHO it's a very shallow WIS who cannot appreciate the magic and elegance of using electrons to make precisely cut crystals vibrate as a way of keeping time. It's a truly beautiful piece of engineering way beyond anything man managed in horology before it. The fact that you can strap these amazing movements on your wrist, throw them about or chuck them in a drawer and forget about them for months is all the more incredible. Sounds a bit wanky, but it really is genius tech.
I'll concentrate on the analogue watches I have/ have although I've had a few decent digitals I'd wear again.
The Seiko 7548's can still be had for bargain prices as per the one just sold on SC.
In my opinion a future collectible classic but totally useable and solid in the meantime. Here's my own 80's black one (I also have a near nos blue dialled Pepsi version from 1978 below)
Breitling Aerospace is a good shout but the lack of a seconds hand made it impractical for me. Breitling have good customer service in my experience which is a plus.
Oysterquartz is a beautiful and great watch, but require more expensive upkeep, as do the 2.4MHz Omegas.
The SBCM023 is difficult to find but has a perpetual calendar and a relatively HEQ movement. Bit small for some at 38mm
You can't argue with the watch that ultimately replaced the milsub (sort of ;) ). You are however forced to wear it on a strap as the bars are fixed:
My premium quartz is a GS SBGX061 which I love on a gator strap but which also spends time on its bracelet. The 9F movements are incredible pieces of engineering and this one is running at +/- 0spm.
Eddie's PRS10 is a great value watch and is my preferred beater.
Finally once you've had Tuna, you'll probably always want Tuna in your life:
Sorry about the long rambling post :)