I need help choosing a new keyboard.

Hey, new user here, discovering this keyboard world... I'm replacing my keyboard soon and I can't decide. Theere's too many options and variables... Might use a little guidance here.

Budget: 170€ máx.

Size: TKL, 75%, 80% and even 65%.

ISO: ES. But if the keyboard is worth it and suits my expectations, might buy keycaps and do the trick.

Other:

1. I'm looking for something thocky, creamy and sturdy. I'm using it mainly for productivity (80%) and gaming (20%).
2. RGB is not a must, but some backlight is appreciated. I don't need the typical 2012 MLG room.
3. I'm more into a low profile keyboard, but it is not a must.
   1. I've already checked Nuphy,
   2. Lofree
   3. IQUNIX (Magi65, and MQ80), but the ISO thing keeps me from buying them.
   4. Keychron: Keychron K3 Max QMK, Keychron V3 Ultra 8K, Keychron K3 HE, Keychron K3 Ultra 8K.

I would appreciate some recommendations as some specs to better look up in the vast variety of models.

Much thanks!