I like GS - if you're having a good or bad day can be reflected in the number of reps you get out. Squatting twice a week (the other progs are 3) is handy if you play a sport or want to add conditioning work. It isnt talked about much on these forums but on others it is.
If you're just starting out, do whichever you're most interested in as this will make it easier to stay the course. Follow your chosen prog to the letter for 6 months and by then you might be informed enough to decide on customisations to your training prog.
Remember tho that training is part of the bigger picture - plenty of sleep and food are also required.