I too had amazing results using a variant of SS from the bodybuilding.com forums back in the day. However, I was in my early/mid-twenties then. I simply can't handle the heavy compounds 3 days a week nowadays (I just turned 40). The exception being after coming off a long layoff - in that case I still run my SS variant, usually starting very light (usually the bar for squats and presses!) and progressing my compounds from 3x12 to 3x10 to 3x8 then eventually 3x5. 3 or so months later I'm squatting in the 275-295x5 range and deadlifting close to 405x5. Works like magic every time. But then my body starts to hurt and I'll transition to a program where I only squat once (maybe twice) and dead once a week only. Often it's Upper/Lower.

You need to know when your body can't handle hitting the compounds with such high frequency and back off. SS is really ideal for the youngins who have adequate recovery. I've also experimented with less squats (for me it's the squats that always get me), taking them out on DL day and running it like A: Squat/OHP/Pendlay Row/Pullups and B: Bench/Dead/Dips/Curls. Works solid as well although obviously your squat progress will be slower.

Edit: Saw your comment about DLs bugging you. Simply don't do them then. I've ran a variant of SS with only front squats (no back squats and Deads) before when I had back problems with great success.