WILLIAM ZERUAS: The trade off may be the inability to clean the corners where two walls meet , which is not a problem in pools with contiguous walls( elliptical,circular shaped etc), in those sections where it is capable of "sticking" to the wall. It's limited ability to suck up " average sized leaves ,such as those from mango or avocado trees , precludes the need to buy the large bag.
WILLIAM ZERUAS: After having observed this machine functioning for approximatively forty minutes ,I feel foolhardy for having bought it without having extensively researched the amount of power required to vacuum relatively small leaves and to climb vertical walls . It saves energy cost, but at the expensive of much lower power(J/s). If you own a relatively small rectangular screened in pool,it may be worth it, It climbs flat walls much more efficiently(reaching higher before falling off) than contoured ones.
Stephen Tabor: This product has absolutely the worst instructions of anything I have ever seen in this price range. I have a call in to Dolphin, but they close during the lunch hour! Of course they don't tell the caller during lunch hour in which time zone. Buyer beware.
Tina DeNapoles: I agree, dolphin diagnostic stinks. Bought it 4 years ago used it half a season and then hired pool cleaners for 4 years. Pulled dolphin back out this year, worked fine for a month and then died. Of course it is out of warrantee and not worth servicing. Got only about 1 and 1/2 season out of it.
durtybs3ckz: Just got one, I have a question for the person who bought it from pool express, we bought one today and how long does it take for them to ship it?
gardenmusic1: I just received word that my second Dolphin is dead. My 1st one lasted about 4 years, and now, so did my 2nd. And I live in New England so 4 years (really 3, since mine died this spring after 4 uses) equals 12-16 months old. (4 month swimming season) This time I was told it actually arced in the power supply. And Leslies pool which had highly recommended it told me, well maybe it had too much debris in it. It was running in basically a clean pool on weekly maintenance.
Opinion, they make junk!
Are Dee: This a a hybrid model sold through very view distributors. I bought this through poolexpress. Instructions are pretty useless. IT DOES A CRAPPY JOB CLIMBING/CLEANING STAIRS...never quite makes it. Also "tires" easily on walls- I still have to use a brush everywhere on the lightweight algae that this machine should be cleaning. My old Dolphin robotic cleaner did everything this one claims to do. I am sick at the money I spent on this low performance machine.