i used to have it back in 2002-2004 period. The patches, amp/cab models in it are pretty decent sounding. Back when amp modeller stompboxes were still new thing, the dgstomp was one of the more under rated one. The other 2 manufacturers with similar product were line 6 and johnson.
hehe, line 6 has came a long way from then.
Other then dg stomp, the other one, which imho, is one hell of a gem stompbox effect from yamaha, is the UD stomp. That one, imho, till now, i have not really seen much delay in a stompbox format, to be able to do what it has within. If you do come across it in japan and the price is decent, grab it. It used to sell at 499 at yamaha shop at plaza sing
The other stomp series, aka the magic stomp, is also a awesome effect stompbox from yamaha, I had 3 once, but the LCD display all failed me.
Hehe, while imho, the stomp series effect from yamaha been really steady, i have to say that their support for it sucks to the max, in discontinuing the product after a short while.