Has anybody done Greyskull LP? Any thoughts on it if you haven't?
GSLP is, in my opinion, the LP program for somebody interested in a program that can last for an incredibly long time that has great benefits for both strength and physique and you won't get bored of. It's discussed in the OP, but unless somebody is an absolute and complete novice, SSLP has you squatting and deadlifting way too much. Eventually, in SS, you switch to a lower amount of volume (per week) in DL and add in PCs, but you're still squatting three times a week. In addition, you're going multiple program adjustments without a good feel of when you should (I'm talking over a 6-8 month peroid). You won't put up the absolute numbers you can on SSLP, but unless you're consuming an incredible amount of food squatting 3x a week just sucks. There are those that will disagree with me, and that's fine, but I have shit knees and enjoy a program that allows me to curl every once and a while.
Also, on your deloads, you can beat rep goals so you're still seeing progression. Which is better than the "just do three more sets of five" mentality of SS.
You can treat GSLP exactly like SS, except your middle exercise can be whatever you want. A common template is:
On days you bench, do 2x sets of curls (EZ bar or dumbbell) for 10-12 reps after a warm up.
On days you press, do 2x sets of weighted chins (if you can do sets of chins) for 6-8 reps.
Six days a week do sets of push ups and chins throughout the day.
People give low weight chin ups a lot of shit, but the extra volume doesn't hurt at all and you can progress lineally just like your barbell exercises. Also, you can do two to three days of endurance work if you'd like to be even more well rounded.
If you're just stepping foot in the gym I'd recommend getting into SSLP first to understand the lifts and get a baseline for your exercises, but after a month you can switch over and keep pushing up numbers for a long while. Finally, it integrates quite nicely into 5/3/1, which also has you, on your last set, do as many reps of the lift as possible.
@Alienshogun - I've been doing next extensions since Johnny Pain recommended them as the last "lift" of the GSLP when I was still on that. Put a few inches on my neck and made my traps look better. I don't love doing shrugs, so I find deadlifts and neck extensions make that upper area look just fine. To be fair, I really don't want a huge neck as I'm not that tall and I don't want to look like hobgoblin.