Need help choosing Longi Hi-MO X10 panels

[Actonite]

My present solar array is within a few years of the end of its life, so I'm researching replacement panels. I'm having difficulty getting accurate information about Longi panels. When I ask Longi, they just send me a link to their installation manual. Hopefully, people here are familiar enough with their product line to recommend specific model numbers. Here are the features I'm interested in: Shading Optimization: High efficiency: Low Temperature Coefficient; Low Degradation: Anti-dust: Back Contact. I have no need for anti-glare or bifacial features. I'm looking to get the biggest bang for my buck. I can go as large as the 72-cell version. My inverter is a Sunny Boy SB6000US, so I can input as much as 7500 watts from the solar panels. I've attached a photo showing the present panels shaded in the afternoon, along with a diagram showing how 72-cell panels could fit on my present rails. I live in the foothills of the high desert in north Los Angeles Country, California. I get snow and triple digit temperatures. Any suggestions would be appreciated.