Wow, I'm intrigued by the reusable lids for sealing. Will need to investigate further.
I too hate jars that don't seal and Kilner jars/lids definitely seem to cause headaches.. . I haven't tried any of the Chinese ones you see on Amazon, but I'm a bit hesitant to try because , well it's such a waste of time, money and effort if they don't seal and you have to reprocess or eat up straight away. We bought a stack of Ball brand lids in the US and they've been doing stellar work.
He got me a 16 quart Presto - it was the only one he could find to get shipped to the UK. Rare as hen's teeth to actually find one in the UK. Works awesome for our needs though!
My sister (in the US) recently got a steam canner as a gift. You use this instead of water bath canning. She has RA and limited mobility, so this works very well for her as she doesn't need to lift tons of water and a big pot onto the stovetop. It's a pretty cool device. Obviously not going to work for low acid stuff, but for jams and pickles and chutney, pretty cool!