GT Omega PRIME:
Yeah, it’s a solid rig. It’s the entry level into proper 8020/profile cockpits, which means it’s stiff enough for DD and load cells without doing the flexy wobble thing you get on cheaper frames. It’s not the fanciest profile rig on earth, but for the money it’s hard to hate. If you’re building around a 15Nm base, the prime is the kind of cockpit that actually lets you use that wheelbase properly.

Simagic Alpha (15Nm) vs Logitech G920:
Huge upgrade. Like, not even close. The G920 is an old-school gear-driven wheel, so it’s weaker, noisier, and you lose a ton of detail. The Alpha is proper direct drive: smoother, faster, way more torque headroom, and you’ll feel stuff the G920 just can’t communicate (weight transfer, traction loss, curbs, micro-corrections).

Like i said i my big guide here on the website though, pedals matter more, have you kept those in mind?