Two thoughts on ED's.
Firstly we're seeing a lot, too many IMO, of threads and posts from members on both sites using ED's as pump enhancers. They do work in this way but I think using ED's in this way is facile. For a start it means guys who don't yet need the enhancement are using an ED for something else. I feel the way our bodies work with some meds using ED's might lead to issues with them not working as well as you'd like. To put it crudely you'll be fucked.
As to my experience - what I use depends on mood (obvs) and who I was with at the time. So I've used Viagra and Cialis with one and I might just use Viagra alone with another. Back when I first moved to Wales I went skirt crazy via Plenty of Fish. There were, at times, crazy days/weeks. I'm a lot calmer(ish) now. One mad week was 2 ladies in one day and 5 in that week. But those were all Viagra sessions. One more serious GF led to 16 hours 'on the nest' hence cialis came in useful.
I'd hesitate to use a longer acting ED when a shorter one is enough. Equally, even a shorter acting ED shouldn't be used all the time when none was needed.
Use them when you NEED to - not when you WANT TO
One more thing: easy access to porn and the videos with extremes of human behavior mean we model ourselves on freaks. Ergo we see guys carrying on for an hour and that might not be what we feel like doing. It's worth remembering that our needs, wants and, of course, desires do vary. Day to day, week to week and yes year to year. I think I came (ahem) into my own sexually late but I'll grow old one day and, I'm sure, 'need' less when I'm more feeble lol