Before buying this I had a problem, reading reviews it was hard to tell if this was right for me. A lot of people use them for assisted pull ups which is not my need. Also, when reviewing the product I wanted to know how strong people were to work out if it was right for me.
I'm 210lbs, 6ft 1 and I mainly do powerlifting so I squat 190kg, deadlift 215kg and bench 125kg with 15 pull ups unnassisted so if you're over or under me this should hopefully be fairly helpful review for you to gauge your level.
I took this solid band, well made but with a fairly strong, sweet rubbery odour on my holidays to perform a work out away from the gym, just all round maintenance work. I found that I could stand on it and do some fairly tough 10-20 reps single armed in the standing shoulder press with a good degree of resistance, I'd normally use a 25kg dumbell for those kind of reps so it's almost bang on being rated at 23kg. I could get a good pump out of bicep curls, sitting on the floor rows, upright rows, bench press, pull downs etc and for the rows, I just folded it in half to double on the strength. I may have got a better all round workout with the number 2 band as I'd be able to do more exercises and just do high reps on the big muscle group exercises.
It did feel stronger than I expected it to be so I couldn't really do side raises or front raise shoulder work and for rotator cuff work, it's quite difficult for me outwith face pulls. I'll be purchasing the number 2 to help me with this type of work so bear that in mind, good for bigger muscle groups but quite challenging for the smaller ones. I'm going to order a second one to do band work in the power rack for squats and bench etc and I'll update my review when I've tested it for this use. I hope this helps someone who needs a strength comparison before buying.