I have the 32 gb emmc 8 gb ram. The 32gb is restricting if you tend to have allot of files that you want to go with you. That was about it. I did overclock it a bit (can’t remember how much, and recently reflashed bookworm). Um… If you want to try all the different os possibilities that this forum has to offer the emmc version is a pain compared to swapping out memory cards.
EDIT:
I found my overclock settings
Sudo nano /boot/firmware/config.txt
[pi4]
max_framebuffers=2
arm_freq=1800
gpu_freq=750
over_voltage=5
[all]
gpu_mem=256