We're thinking about getting a new filter for next year. It looks like the Intex Krystal Clear Sand filter Pump for Above Ground Pools, 14" is a good choice. It's a best seller on Amazon with high ratings. It has a flow rate of 2150 GPH and it looks like I only need 1850 GPH for my 15k Gallon AG, so slightly oversized it good, right? I'm worried that a sand filter, full of wet sand at the end of the season, is going to be exceptionally heavy and difficult to move indoors for the winter. Is there anything else we should consider before dropping $500 on a new filter? Is there a better time of year to buy in terms seasonal discounts if there is such a thing?