Need to Replace my Hayward RS1500 Pump

I need to replace my in-ground Hayward RS1500 Pump with 2" Pipe Fittings.  My pool size is 80’ L x 45’ W x 9’ D.  I’m condsidering these as replacements, but wanted to avoid major re-piping, since the pump is in-ground and the location is not easy to get at.

Options:

1.  SP2610X15

2.  SP2615X20

I welcome all recommendations.  Currently the pump is not operational and this is the 2nd replacement RS1500 in less than 3 years.