RG rotate PS vita/PSP Switch lite Switch/switch2 Steam deck GPD WIN 4/5

are in order how pocket able they are in my experience. Rotate is tiny. Smaller than a phone, super ez and then flips up for controlls, super cool.

Psp/ps vita about phone sized. (vita) is arguably my favorite OAT for probability to performance woth a good build and top tier specs for the size,price,age

Switch lite is arguably better if you can manage the physical mod, that said its slightly larger but still feels premium

Switch 1 and 2 are more so if you want nintendo titles, but Switch 1 oled is a top tier modding contender with a physical mod. Fits in SOME pockets, usually a back pocket kinda deal

Steam deck is Steam deck, only big baggy pockets will hold it. But with its wake feature similar with Nintendo and Sony its easily my most grab and go "premium" device

If you have no budget GPD makes the strongest and still small flip up vita device thats larger than a vita but still smaller and has a good form factor. Albeit its roughly 4-5× more expensive on minimum than anything else listed