With the spa in play, I think you need to be considering either a Whisperflo or Super II 1HP 2-speed or the Intelliflo VS or Ecostar VS. The smaller Hayward VS pumps I am not sure are up to the task.
The bigger VS pump are certainly more power than you need, but you can tailor the flow for the spa and run at lower speeds than the 2-speed pumps. But, they are expensive.
Likely looking at $550 for a comparable 2-speed vs. $850-$150 = $700 for the VS pumps.
For the extra $150, the flexibility might be worth it, but it will take a few years likely to save that extra cost in power savings vs. the 2-speed.
The bigger VS pump are certainly more power than you need, but you can tailor the flow for the spa and run at lower speeds than the 2-speed pumps. But, they are expensive.
Likely looking at $550 for a comparable 2-speed vs. $850-$150 = $700 for the VS pumps.
For the extra $150, the flexibility might be worth it, but it will take a few years likely to save that extra cost in power savings vs. the 2-speed.