What is a standard 4-way?
If you're using a Happ stick that doesn't have the diamond shaped restrictor, then you're going to have lots of trouble.
The 4-way mode on Happ's regular sticks just uses a smaller actuator, to prevent hitting two switches at once.
This makes it sloppy, and prone to dead spots.
The two things that I look for in a 4-way are a good diamond feel, and as short a throw as possible.
I don't care for the Nintendo/Seimitsu/etc... cloverleaf 4-ways.
That little hump between the directions just bugs me to death.
My personal current favorite is a T-stik, with the RandyT mod done to it.
RandyT's mod was to loosen the screws that hold the base on, insert some washers into it, and screw it back together with longer screws.
That relieved some spring tension, and made the stick give you less of a workout while playing, while still maintaining the short throw.