From a performance perspective you will find almost all solar panels roughly comparable (within 5% or so for similar surface area panels) , some may perform better in low wind areas, others slightly better in high wind. This is mostly a design trade off between maximum tube surface area available for solar exposure such as seen on Aquatherm brand panels, or a more rigid flat surface which looses less heat to convection /conduction such as the Techo Solis panels, and all points between. Bigger issues are likely to be the cost to service life ratio, warranty coverage, and if they are distributed exclusively through a dealer/installer network.