preference preference preference.
There are some traditional girdles out there that you still step into and are just fully elastic/stretchy, Warrior makes one and some Tacklas can still be found, I think True might have one too. CCM has a hybrid where you step in but have adjustable thighs that have not only height adjustment but have a strap that goes around the thigh. Then Bauer has a whole wrap style where the girdle opens up fully like a butterfly and you just wrap it around your body. Some people like the traditional style and some like the wrap style, once you decide what you like you can go from there. Most girdles will offer more mobility and lighter weight compared to traditional pants but may have less padding in certain areas. Also, girdles are great because you can mix and match shells and collect shells that will match any team you're on lol, all girdle shells will fit all girdles, they simply slide on like shorts and secure with some combination of velcro closure and/or a belt, no need to actually attach to the girdle.
Personally I could never get into the full wrap style, I tried a couple of Bauers and they never felt good and I didn't like how I had to put the on (I started with old grey Coopers then a black Cooper, then a Tackla, then a couple of Eastons... there was no wrap stuff back then lol), the Bauer ones (MX3 era) never felt very protective to me. I then had a 9K for a while and loved it until I started wearing a CCM Super Tacks which is perfect for me, it has great adjustability but retains most of the traditional feel, also it's super protective and pretty lightweight. The Jetspeed seems like a simplified version with less adjustments so I guess that would be my recommendation for something you can probably easily find at retail (it probably fits like the Super Tacks... small, so I would def try one on if possible).