This will likely be controversial, but personally I use and rate these:
Tubey
*£15.99 each from Amazon (Only in 60mm valve length), touch less if you order 4 I think it is.
I run them in 28s, at around 75 psi max.
I've seen reviews from people that say they puncture often, but it seems to be for people who are forced (or choose) to run them at higher (100psi) pressures, seemingly down to a higher combined bike and rider weight.
I've ridden around ~1300km with no issues at all.
Biggest benefits for me are:
- Retains air significantly better than any butyl tubes I have used (Really useful on a bike that is not used that regularly)
- Lighter than butyl tubes
- Has saved me and my bike a decent amount of weight, as I like to carry 2 spares, so I have the tube weight saving X 4, PLUS the much smaller tube size has meant I no longer need a saddle bag, as I can fit everything in the rear jersey wallet that I was using anyway.
- Allegedly they have lower rolling resistance than butyl tubes as well I believe
*There are cheaper ones available on Aliexpress or similar, Ridenow seems to be the make of choice, and I have a few, but have yet to call on their services.