While much of the answer relies upon personal preference, there are often differences between FX products and Multi-Effect products. With the recent availability of low priced multi-effects, many have been eager to jump from individual effect pedals to multi-effect pedals. Multi-effect pedals do give more effects for the price and are a value when watching your ever evaporating dollar. Individual pedals do, however, offer better and often a wider range of effect. Why is this? Well, in order to pack all the effects into a multi-effects processor, something has to give. There usually isn't enough room to pack all of the circuitry into the small multi-effect packages. In the end, it really comes down to what application you plan to use your effects in (live, practice) and the sound you are both satisfied and happy with.