[Antonmb]

Some good advice here.
In-ear monitors (IEMs) will provide the best isolation and lowest leakage to the person next to you, but not everyone can tolerate the fit for extended listening. For full-sized
over-ear, MrSpeakers Aeon closed-back are another very good option, and most find them comfortable.

The Schiit amps are great for the price for SS. If you like tubes, the Woo amps are excellent. The WA7 and WA8 both have good DACs and small size for a bedside setup, but you would need to add a streamer, perhaps something like a Bluesound. Also re Cleed’s suggestion for a portable, Astell & Kern devices can also stream from a local server, which doesn’t just limit you to what you can load into memory, but you need to chose headphones that are easily driven.
As Glenn pointed out, the best situation would be to find a dealer who has a variety of headgear you can try out. Barring that, find an online shop that allows trials and returns so you can test drive some options.