the RP series of pedals by digitech are great, but you also may find later in your playing that stompboxes offer a better, albeit one-dimensional, tone. Bascially, I mean that a multi effects pedal is made to be a jack-of-all-trades, but master of none, and once you find your unique sound, you can buy a stompbox that will produce a delay more suited to your sound than, say, an RP200.