Its a personal choice but I would choose Gambloc personal for home use. Basicially soon as it is installed and you agree to the terms that is it! You will not get access to any casinos nor any gaming related sites. You will not be able to edit any of the settings nor will you be able to remove it.
The bigger packages (i think) are for corporates or for familys where there is a admin which kinds of defeats the object if your doing this solo. Go for the lowest cheapest package for 1 year.
Note that when gamblock is installed certain parts of your system will be locked. You wont be able to run CMDs (command line functions) or access the bios etc. This may have changed in recent versions but I know when I used it a few years ago it did not allow me access to certain parts of my systems which I needed for my work. But basically when its on your system that is it. No more gambling online from that 1 PC.
And if in doubt contact gamblock customer support they were in the past pretty speedy with reply’s during office hours. If anyone here has other info on blocking software of if I have quoted something wrong or out of date then shout up . As I said it has been a few years since I last used it.
Good luck with it all let us know how you get on!