Maibec has been a PITA to deal with. They wouldn't even send me some replacement boards couple years ago unless I had original proof of purchase, however that was a warranty thing, so I get it. But, even for getting some stain, they make it very difficult and costly.
I also need to replace some outdoor door and window pine trim which has started to rot and lose paint. I usually scrape, prime and paint, but it's just easier to tear out and replace at this point. Would like to get some cedar, but nobody carries 5/4 thick trim. I've used it in other areas like under the deck sliders and it's held the paint very well, as expected. Only other option is to get some PVC, which I've used before. Hammond guy said they make a pine pressure treated product (Lifespansolidselect.com), that supposed to be good, but I am leery of using pine again.