Personally I prefer the acer over the gigabyte for the following reasons

HX series intel is more powerful than H
DDR5 ram (but 8GB is not enough, got to upgrade to 16GB)
Liquid Metal Cooling
Thunderbolt 4 for future expansion
bigger battery
and just generally more well known brand

Gigabyte G series is just rebranded Clevo as far as I know, so you could probably find the same machine under other brands
only Aorus and Aero are in house

as for pros of the gigabyte
4060
more light weight

but the 150w brick is concerning as it may mean it's running those components at reduced power
and according to notebookcheck it seems like the psu may even get overloaded...

personally I'll go with the acer + another 8gb ram to make it 16gb
they do have a 4060 model as well but well over budget

also for reference, it seems that acer is running the 4050 at 140w while the 4060 in the gigabyte is being run at 75w
that could lead to a significant performance difference

Review from notebookcheck

https://www.notebookcheck.net/Predator-Heli...a.765436.0.html
https://www.notebookcheck.net/Gigabyte-G5-K...s.761048.0.html

seems like the i5+4050 acer gets a 230w brick

which again contributes to the weight


seems like g5 kf i5 can pull 60w at max
probably for cooling reasons + spare power for other devices like screen, ssd, usb devices
but realistically it will throttle down due to thermals