With a 120v limitation all I am seeing is 1.5hp 2 speed options including the proline brand.
Hayward does make a 115v vsp but it says it’s only 1hp which may not do enough.
If wanting to keep the 2 speed option (good choice with a swcg- running on low all the time & always making chlorine)
These are the pumps I would consider - they are 1.5hp- Coupled with a 19” or larger sand filter
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Hayward matrix, pureline, & doheny offerings are all very similar in style & warranty for those size pumps & filters. Obviously hayward & waterway are quite the known brand & replacement parts should be easy to obtain online and possibly locally.
Pureline is the house brand for inyo and they carry lots of replacement components for their products as well.
The waterway has a 2 year warranty.
None have the twist lock plug- that can be changed but you’ll need a timer if going with a swcg anyway.
For my 115v setup I use this plug in timer
Or you can go with an Intermatic hard wired timer.
For the swcg you want one that’s rated for
at least 20k gallons.
Like the filter, bigger is better here as it means you won’t need to run it as much.
If going with a 2speed 20k gal should be sufficient but if going with a single speed pump you might want to go larger (30/40k) for the swcg so you don’t have to run the pump as much to reduce energy costs.
I have a pureline replacement cell with an old Hayward Aquarite system- the cell is going on its 2nd season & so far I am happy with its performance.
Several here on a budget have been satisfied with the pureline & calimar swcg systems.
Pureline swcg (from inyo) is a 1 yr warranty,
Calimar swcg (pool supply unlimited) is a 3yr.
If you have a little more coin & prefer a longer warranty circupool is a good & popular option with multiple systems to choose from.
Both inyo & pool supply unlimited also sell hayward & pentair products if those are in your budget.
Hope this helps