I also haven't had to buy anything new for a while, apart from food, but have used some of the ones above and agree. Still haven't found "Hamsters we love" on Etsy!
I was thinking about this topic after coming across an email last night. So one of my favourites would be a cage manufacturer - Savic! I know not all their products are great but I emailed them 7 and a half years ago and asked them to make a 100cm hamster heaven - ideally with a 30cm deep base for deep bedding!. I found them great to deal with and they listened to hamster owners. I said I was active on forums and many owners wanted 100cm cages and out of the ones available, none of them had a big front door like the Hamster Heaven.
My first response was a fairly generic one when I received a fairly long reply from someone in a customer services capacity saying they do consider larger products but what is considered a "large" cage in one country isn't considered "large" in Germany etc etc. I replied saying I think many people in the Uk would buy it as the hamster heaven is very popular but it doesn't fit a 12" wheel very well and needs a bit more space.
However shortly after I received a personal email from someone in the design team, who continued to deal with me, throughout production of the Savic Plaza
Which didn't have a name at that time. He said they were considering making a 100cm hamster heaven and it would be a similar design to the Xeno rat cages - ie knockdown - as they could use the same manufacturing rig - and he would keep me updated.
He said they couldn't change base size due to that needing a whole new manufacturing plant. He consulted me about height saying the design team had 50cm but he thought that was too tall for hamsters, what did I think - I said about 45cm. He assured me it had a big front door like the Hamster Heaven. He sent me mock up photos! Then told me where it was to be released and when.
The product was the Savic Plaza cage. And at first quite a few of us were disappointed it was 50cm tall - they were trying to double up catering for rats too maybe thinking they wouldn't sell enough of them otherwise. But - it's a 100cm cage with a big front door and there are ways of getting around the height!
So I was hugely impressed with them as a manufcturer - they listened to hamster owners, they pitched the price not too high and they eventually got it into a main Uk stockist. And it has become very popular. I now have two
As it happens, Brexit came along meaning the Alexander and Barney cages were no longer available from Germany and for a while the Savic Plaza was the only 100cm cage available - until Little friends made the 100cm ritz and grosvenor more recently (but no big front door).
It may have been pushing it a bit but not long ago I wrote to them again and said how popular the Savic Plaza was with hamster owners and any chance they could produce a bigger 120cm one with a bigger front door! I had a response saying this would be passed to the design team. And it seems they have listened to that too! As there is now a 120cm Savic Plaza (which was released in December and apparently will be available in the Uk at some point this year).
So I am really impressed with them. The Hamster Heaven is one of the better made 80 x 50 cages anyway. I am also hugely impressed that they still supply stock to the Uk, unlike most other European manufacturers. If we were limited to Uk production only there would hardly be any suitable cages.
I'll just add I have no financial interest whatsoever!