I currently have a Jandy Stealth SHPMP2.0 pool pump. It is an extremely loud - I assume it has bad bearings - single speed pump that I'm looking to replace. The two options I have are the Jandy VSFHP165 which is a 1.65 HP variable speed pump and the Jandy VSPHP270 which is a 2.7 HP variable speed pump. I could save $100 on each if I go with the Pentair versions, but I'm unsure if they'll be as easy to replace by not having to rewire/recut PVC. My pool is about 15k gallons. Do I need/want the 2.7 HP or is the 1.65 HP the right answer? Thx!