I used hdrol for bulking and I liked it a lot, I started at 165 and ended PCT at about 180 when all was said and done. Like others have said you will be REALLY hungry all the time on cycle so cutting might be hard. Also if 75 treats you well I would definitely consider running it at 100 the last couple weeks. I responded pretty well to hdrol, only bad sides were no libido after about week 4 up to 3 weeks into PCT or so and extreme back pumps at 100, but I didn't really feel that "on" feeling until I was at 100. I think that was the sweet spot for me. I ran it 75/75/75/100/100/100 probably excessive for a first cycle but I really wasn't feeling much at 75 so I upped it early. I've seen people go as high as 125 on hdrol but I personally don't think that's necessary.