Thanks.

I found the current models for those items when I was searching earlier today. Most of the numbers are the same, but a few have new versions.

I'll have to look into the multi-speed pumps as well.

The thing that is difficult in factoring pump flow rate vs. filter capacity is factoring in head loss incurred by the pump.

A pump may pump 60 gallons per minute with 0 head loss, but may only pump 20 gallons per minute at 20 feet of head loss. That's the part that confuses me when figuring if a filter has a higher capacity for flow than the pump. I guess to be on the safe side, get a filter than handles more flow than the pump produces at 0 head loss. Just seems like overkill and more expensive.

Thoughts? Is there a good way to calculate headloss to get a better idea?