I tried several sticks in my controller (Supers, P360, and T-Sticks) and ended up using the J-Sticks. The J-Stick does have a rotating restrictor plate to change from 4-way to 8-way operation. I think the sticks are fantastic, especially for a stand alone controller, as the spring tension is light enough that you won't be sliding your controller all over your desk like you would with a T-Stick or P360. The J-Sticks are a bit shorter than the Happ sticks, so keep that in mind when you think about your panel thickness.
Dave