I'm looking for a quick charge power bank that would be comfortable to carry around in a pocket. Preferably one that supports USB-C. There doesn't appear to be very many options.

Here's a slim USB-C power bank that I really like the design of — https://www.ravpower.com/10000mah-portable-charger-Type-C-black.html — but there's absolutely no mention of quick charging. It also has a great warranty — 18 months that can apparently be extended for a lifetime.

However, this is the only one I could find that explicitly mentions QC 3.0 support, has USB-C, and is pocketable — https://www.amazon.com/Portable-ROMOSS-10000mAh-Resistance-Qualcomm/dp/B072X5PCV8 — but I'm not familiar with the brand and it would only be a 12 month warranty with that unfamiliar brand vs an 18 month warranty with a more familiar brand.

Is the Romoss the one to go for or are there other options? Will the Ravpower still charge my phone quickly or should I stick to something that explicitly mentions QC?

Alternatively, I could just not worry about USB-C and go with Anker, who I'm pretty comfortable with and then I'd have a couple more options – either https://www.amazon.com/Anker-PowerCore-Upgraded-PowerIQ-Samsung/dp/B01NBQX0O5 or https://www.amazon.com/Upgraded-Anker-PowerCore-Qualcomm-Portable/dp/B01JIYWUBA. That would lead me to another question, though. Which is more pocketable and comfortable to carry? Compact but thick or tall but slim?