

Not an expert, but here are some good ones:
Earthbound (SNES) - Kids-on-bikes fight aliens and meet cryptids in a quest to stop a cosmic horror in a JRPG set in suburban America. It’s weird, wonderful, musical, and sometimes startlingly heartfelt. Not too grindy as JRPGs go, but keep the 2x fast,forward button handy anyway.
Chrono Trigger (SNES) - Another must-play. It’s a time-travelling fantasy JRPG with one of the best OSTs ever made. While playing it, I had an existential crisis realizing I’d never run a D&D campaign this cool.
Metroid Fusion (GBA) - A metroidvania (duh) set in an infested space station, where an injured Samus races to arm herself against an unknown enemy. It manages to feel desperate, claustrophobic, and fast-paced, which – hot take – I feel is rare for the genre.
The Legend of Zelda: The Minish Cap (GBA) - A self-indulgent pick for me, as I imprinted on this short-but-sweet game at an early age. It’s the last isometric Zelda and a swansong to the genre. The central gimmick, shrinking Link to the size of a mouse, gives the pixel artists the rare chance to show environments in lush, up-close detail that makes the world spring to life. Also: Ezlo sounds like Danny Devito. That is all.
I don’t recommend the upcoming Lenovo Legion Go 2. The Go 2 is around $1300, and only offers some 20% performance increase over the previous gen (with the Z1E CPU) which is currently $750. The ROG Xbox Ally X pricing is yet to be revealed.
The elephant in the room is the Steam Deck OLED, which you can find refurbished/certified for $440. It’s not as powerful, but power is never going to be a handheld’s strong suit anyway. They’re everywhere and tons of indie games are made with it in mind.
If you’re willing to get a bit nerdy, game streaming is getting pretty good these days, and is really easy on battery life. Moonlight lets you stream games from your desktop PC, while Xbox Remote Play can stream from your Xbox. If cloud gaming is your jam, Nvidia Geforce Now and Xbox Cloud Gaming are available. For any of these, the Steam Deck would be perfectly adequate, but if you want something smaller and lighter, you could also go with an AYN Odin 2 Portal, which is an Android-based handheld with WiFi 7 and a nice 120Hz OLED screen for around $330.