HIee Pals...
The Slik 330dx range and the 190B Manfrot is of the came class. Build is about the same. How ever, there was once i tired out my 300DX(same joint type as the DX Slik series) vs the 190B in the Markins Ballhead facility in Korea and it was proven by the wind test(side vibration)....by the way the wind test uses teh normal home fan.... that the Slik version performed better then the manfrotto. They both performed on par for fast shutter ra..tat...tat..tat..tat type of shoot . Both can damp vertical vibration well.
My advice...get the best that you can afford.
The problem is many of us get the tripod as th elast item in the shoppin glist and after you got all the Cam,flash and lens.....youe end up only have a small budget for tripod.
Its best to get a good tripod right after you get the body and 1st lens....then you can see how a one-thought lousy lens csn give you really sharp outputs...heheh
Here is my past experience:
Slik 300DX Able series ---> Velbon 530 Series(current)
Markins M10 Ballhead-----> Benro KB-1 (Current)
A downgrade for the ball head as you can see as i do not use large load lens any more(400mm f4.5+1.4xTC). The Benro KB-1 really does its job and I personally find it smoother to operate as the
tension control is a separate knob. Its a breeze using with my D7D+@00mmF4Macro+Flash+Cable+Bracket.
Surprisingly better feel and easier tension control versus the Markins.
If you use a Heavier load (300mmf2.8,400mm f4/4.5,600mm etc) then Markins is the way to go.