If you want to play it safe go with the 383, it will do you well!
"All" flashes besides Minolta\Sony ones have the standard ISO (I believe) hot shoe. Some flashes will say without module or something similar which could imply it is shoeless and you would need to get a shoe for it (and sensor and stuff that comes in the module).
The Sunpak 422(D) and 433(D) should have the standard ISO shoe unless a M\S mount, and should have power controls. Some models depending on what make it is for\module it has does not have power controls but most do. If the seller doesnt mention it, simply ask for a picture of the back of the unit and it will be quite clear if it has power controls or not.
I dont believe the GI ones do, I asked them and their answer was wishy-washy so I would say no stick with the known ones, SB-24\25\26\28, 285HV, 383\433\422 etc etc...
Thanks
This slider is what you would be looking for on the back of the unit.