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

If you own the home? Your best option is replace it. Anderson is your best and only option if you hope to do the job by yourself. All other sliders i have ever installed ( hundreds ) come pre-assembled and will take 2 or more people to install and a decent sized truck to transport it. Where as an Anderson slider comes in boxes (3-4) , and is easily installed by 1 person. I like their vinyl clad wood slider myself. We have 2 of them in our home. They also stand behind their lifetime warranty too. No they are not the cheapest, but they are one of the better sliding doors out there. One issue you will have to address is size, Anderson sliders are 5’10” width not 6’ like many others. I have always filled out framing to accommodate the difference, not difficult and insulate the gap is added bonus. Height is standard 80”. Anderson also guaranties parts support for 10 years from production end or at least they used to. Good luck.