Hi Margaret
1 which state are you in
2 The Sunpower does not have the watts/ panel
3 model number of products must be display
4 No mentions of the Discount that you are getting
5 and best you insert a photos screenshot of your roof
Solar Hybrid Solutions
Assuming that the Fronius inverter is the same (8kW assuming), and SunPower wattage is approx the same, then I’d think that $900 more for Sunpower P series is worth paying. As @SolarHybridSolutions says, would be useful to get the model of the REC though (can make a big difference what the model is, see review below), and wattage of the SunPower.
Photos of the roof is useful if you are unsure about the design the companies are proposing (especially if they are proposing different layouts).