@knowledgeisnotignorant I'm not a big fan of the ones in your example pics specifically & the reason is that the lever which the plates attach to is pointed at about a 45 degree angle towards the floor & when you lift the weight, it gets to be about parallel with the floor, which means it's hardest at the top. You're generally better off when the movement is harder in the lengthened position, such as a barbell bench, dumbbell bench, smith machine bench, or some other machine that is simply designed so that it fits this bill.