I also really like gparted, originally with the dual boot I had to manually partition the drive for the os and the boot paritition, took a couple minutes to figure our and its very convenient to be able to mess with your ssd easily just by plugging in a usb and booting into the live os from there. Idk if any other installers do that, if anyone knows please let me know, like the usb boots into kde plasma and you can kind of test out the ui while clicking through the gui installer.