My current laptop is slowly dying (I hope I'll be able to finish writing this thread before it dies

I currently owns a Macbook Pro M1 (2021) with 16GB RAM and 512 GB SSD.
I use it mostly for music production (also some streaming and web browsing but that's it).
As Push 3 SA owner, I try to use native Ableton plugins as much as possible but I also own a few VSTi : Korg M1, Serum, Diva, Kick 3 and Chop Suey. I also own a few hardware machines (mostly Elektron stuff).
I don't remember having faced any performance issues (such as CPU overload) with my M1 Pro.
That being said, I have to pick between 3 machines (cause I can buy them from my job which makes them cheaper than the showed prices) :
- Macbook Air M3 - 16 GB RAM; 256 GB SSD - 1300 € (8-Core GPU)
- Macbook Air M3 - 16 GB RAM; 512 SSD - 1530 € (10-Core GPU)
- Macbook Pro M4 (the "standard" one, not the M4 Pro) - 16GB RAM; 512GB SSD - 1930 €
What do you guys think about these ?
The M3 with 256 GB SSD is the cheapest option (I think I don't think these 2 more GPU cores anyway) but I am a bit affraid by the small SSD storage. (My current Macbook has 512 GB and is almost full (but I have plenty of old sample banks I used to buy 15 years ago and also some 4K movies).
I can afford these 3 but I don't want to spend money if that's not needed. I need something that can last 5 or 6 years with good performances, that can be brought for live performances and that is not too heavy (as I also like to work with it on my knees while hanging in the sofa
