My Tower pressure cooker is the aluminium 4 litre machine called the 4374. A date stamped on the lid is 1987 but I've not had it that long. I think since 2002 or 3 and it's given fault-free service ever since until now. Living alone many people find cooking for one a problem. I can't comment on that but it hasn't been for me and that's probably because of a convenient size pressure cooker (and a freezer). I've sometimes thought singles I should write their recipes down. I'm also a motor-caravanner where kitchen space is very limited and the pressure cooker is useful beyond comment. There have been a few fellow motor-caravanners over the years who have said they would buy the same model on seeing mine and my use of it. I've also bought the same model as occasional gifts for friends. Sadly, mine has developed a small fault in the lid handle – after 15 years. In my opinion it is a small fault in a plastic clip which would be easily and safely replaced. Tower is cautious and does not want to supply the plastic piece (a spring clip, no more) and the cooker can (not so easily) be operated without it. I'm choosing to replace the cooker and I've closely looked at what's available. My decision is to replace it with the same model – the 4374. It's an ideal size for one, or even two, it's simple and robust (even with a 15 yr old plastic clip which I would make available as a spare part) and it's inexpensive – I can buy a new one for about £26 - and the only possible reason I would have to get a different model might be to try for the same but perhaps in stainless steel to take account of modern induction hobs.