New User Asking for Device Advice

I’m fairly new to chastity and need help choosing a device. My main concern is comfort and being able to exercise while wearing it. I plan to stay locked for only a week or two at a time (hopefully).

I bought a Holy Trainer. It’s comfortable when sitting but hurts over time, especially during movement. Even with the largest ring, it feels very tight. With the cage facing down, it pushes my balls apart which is uncomfortable. I definitely can’t jog while wearing it. The pressure from the tight cage and squashed balls makes it tough to walk.

I’m looking for something lightweight that offers extreme comfort. I prefer plastic or resin with an interlocking system (no pad lock).

Advice is appreciated.