I use a 46 and they stretch a lot in the hips and are very tight in the thigh. I'd also be around a 52 from my thigh, a 46-48 from my hips, but a 40 from my waist. Depending on your experience with tight equipment and pain tolerance, I'd go tight and find a good tailor, if it slips too much. I'd also make sure that the 48-50 is tall enough for you, as I am 5'5" and 46 is just long enough. The Centurions are longer than the Metal, in my experience. If it is tight from shoulders to thighs, it might work with your hips - but it kind of depends on where you like your support.