This comment is irrelevant based on the laptop age now, since it's a bit outdated... But if anyone is buying a second hand one or looking for a cheap laptop now, I've had this laptop for over 4 years now and it's never missed a beat.
The model I purchased had the i7-8750h, GTX1060 6GB, 256 Samsung NVME SSD, Seagate 1TB SSHD, and 16GB of DDR4 RAM.
For 3 of those years it was used every single day for video editing, Emulation and recording purposes which can be quite an intense workload. Still to this day I've never had an issue with it with regular maintenance (removing back case and blowing out the fans, basically).
The GL703GM has always run fine whatever was thrown at it, but I have done a couple of upgrades regardless just for 'future proofing'. I installed an extra 16GB of Crucial DDR4 RAM which is probably overkill, and am about to replace both storage modules for more speed and capacity. The NVME SSD will be replaced with a 1TB Samsung 980 SSD, and the SSHD will be replaced with a 2TB Sata SSD. The difference in SSHD and SSD speed is huge so editing even from the D:/ drive will be hugely improved!
3TB is also probably overkill for me, but it gives me the option to install all programs to the SSD, as well as a few games that can have MASSIVE load times (Such as Final Fantasy 15, which had over 4 minute load times from the original SSHD, but 20 seconds from the original SSD.) There will be no issue with read speeds on multiple tracks for video editing I'm sure from the Sata SSD upgrade alone!
Very much recommended, though these days only for a for a mid range laptop for workloads and some gaming!