Replacing water pump... which one?

I normally buy Shurflo 2088 pumps. My current water pump is not a shurflo. https://www.amazon.com/gp/product/B00P8BE6S8

The 3.5gpm/45psi Shurflo head started leaking (bought 11/2019). I had been wanting to try a different brand and I didn't want to rebuild the pump. I've been using this one since the beginning of July. I like it. It's quieter. For me, it has plenty of pumping power at 3gpm. I have a dishwasher and it requires 45psi. I pump all my water from my holding tank. The 0.5 micron filter drops the water pressure too much to use.

I don’t know which camper you have but on my ‘18 cedar creek the check valve is located behind the valve you use to switch your water supply between city and tank. Just replaced mine 28 bucks. Dan