I prefer Offbondage since they come with alloy stems and valve covers. Plastic stems can crack and leak. Though ThinkRider tpu tubes can be bought for cheap. I usually buy mine through AliEx Pick 3 & Save.
Since my local urban roads suck, I tend to run lower PSI pressures, about 5-10 psi lower than optimal. I've been able to minimize punctures this way with tpu tubes. If I were racing on smooth tarmac, I'd run higher pressures. If I were running wider tires like 30-32c, I'd probably go tubeless. Though I like to climb and prefer the nimbleness + lower weight of 25c road slicks. Also on 21mm internal width rims, my 25c tires widen out close to 28c so I get the advantages of both a narrow tire (less weight) and wide tire (more contact patch).