Oh, boy another one....

Ok, here goes...

Reactive:  This will go longer, and will snap harder in the end...it may seem to hook more because of the amount of boards covered in the hook...but overall it really doesn't.  Typically better for medium or light conditions, depending on ball.

Particle:  This will want to hook when it touches the lane, therefore making a sweeping arc.  It might not seem to hook as much, since it is not making a strong backend move like a reactive.  Better suited for heavy oil, since it will have much better traction than a reactive (due to particles, which act like treads).

Neither is better, it's your preference.....Hope this helps.
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Boom.