I like Lowes over HD tbh, they have offered military discounts when HD and others did not. But if I’m not mistaken? Only Anderson has frame NOT assembled. In fact you can bring home a complete Anderson slider in your SUV, Minivan or station wagon. No truck needed lol. But if Pella has upped their game? that frame is un-assembled, other panels boxed, ? Then this would make for direct competition to Andersons long time un-opposed market. I work alone most of the time, so it is of direct need that I am very familiar with Andersons product over the past 20-30 yrs. But even at my age, I would and do install Andersons slider doors or french doors. But many others I can not do alone. I’ve installed many of Pella’s vinyl sliders too over the years. My experience with them has been mostly vinyl extruded & welded frames. Not as robust a product as andersons for sure, and for about same money. Js