Originally Posted by
Clark_Kent
The only way to collect it all is to go the floppy route. There's the Exile & Death/Return omnis, but tpb's are few and far between. They released a few that are long out of print (Time & Time Again, Eradication, Krisis of the Krimson Kryptonite, a few others). A few other collections were started but abandoned after one volume (Superman Blue). Not a ton of love from DC for Triangle Era collections.
In 2019 I finished collecting every Post-Crisis Superman appearance between the end of the Exile Omnibus and the start of the Death/Return omnibus and had them custom bound. 6 large omni-sized hardcovers, and I love them. I was also able to slot in things like Armageddon 2001, Eclipso: The Darkness Within, and other appearances. Lots of fun to put together and it's the best way to have them in my opinion. A little expensive, but worth it for my favorite era.
Slowly working on Post-Death collecting with a plan to bind later. I'd say I have about half of the issues from the end of 'Return' through the end of the Triangle era. I'm thinking about continuing forward to Superman 200 for a stopping point.
As to the OP's question, I wouldn't recommend reading only 1 title. The Triangle era was, for all intents and purposes, a weekly Superman book that ran for like 12 years or something. You wouldn't read just every 4th issue of '52' or 'Batman Eternal', for instance. The creative teams on the super titles plotted everything together so closely that you can really only tell you've entered a new issue because the art changes. The writing, on the whole, is almost seamless. You pick up on pet characters eventually...Simonson and Bog used Keith a lot while others didn't, for example...but it's all very seamless. DC Infinite has a section where you can read by story arc, and they have the Triangle Era in 3 parts and the majority of it is in there, I think. For $7, it's a cheap way to get into it.