Been doing squats recently and up till now, have always been using the squat machine typically found in most gyms. Reason I use it is because it has the cushions for my back which help keep my back straight and aligned as well as the ability to change weights quickly, just select a plate, insert pin and go. Been semi-afraid of using the free weights and squat rack for fear of hurting myself with bad form or maybe toppling over (lol).

But here's the question, which is better? I've read that the barbell and squat rack is better since you utilize more muscle groups whilst balancing the bar on your traps compared to the squat machine where i don't have to worry about it that much. Anyone used both and noticed a difference? Or are they both more or less the same and work the same muscle groups?