If you're not getting good results with the CopperHill method, then I'd review your technique carefully, and ensure that the rear elements of your lenses are clean. Any sort of brush is less likely to shift stubborn dust than wet swabbing is. What's going wrong with the CopperHill method for you - if we know what your issue or issues are, we may be able to provide some advice.
If you want a brush (and I do have one - it's a useful thing to have), CopperHill has one which is perfectly functional and much cheaper than the VisibleDust brushes.
David