Flash another thread

[Lando]

I just sent back the metz 48 to B&H, since it failed any exposure. They don't have anymore in store, so they gave me back credit.

So again I have to purchase a flash:

Within my budget there are: Pentax 360, Sigma 530 ST or Super, another Metz 48.

Which one should I get to be reasonably sure to get right exposure when bouncing?