I am pulling my hair out with what to buy. I presently have a Lomart Ultra Promega 1hp pump and Spectra 3 17" sand filter. This equipment is starting to give me little problems here and there so I have decided to replace all the equipment and use my old pump as a back up. The pool is a 21' Lomart pool. I like the promega pump because it has a built in timer which is nice, most of the pumps I am looking at, do not offer that feature. I am looking for a complete new system and I would like the best I can get. Looking to spend $400>$600, I can go higher if something is highly recommended. I need a sand filter and new pump. What would be the best combo for an ABG 21' ?? I also need the pump to have a three prong locking type plug. Thanks for any help with this.