The main difference between IPv6 and other formats is not speed or trust from websites, but compatibility: it only works with resources that support this standard. In return, it offers the lowest price per address. Below is a comparison with each format separately.
IPv6 and IPv4
Both formats are static and both belong to the data center. There are many more IPv6 addresses and they are cheaper, but IPv4 works with all websites without exception. The details also differ: in IPv4, both protocols are available immediately, in IPv6 the protocol is chosen when ordering; IPv4 has a free 100% Uptime option, IPv6 does not.
IPv6 and ISP
ISP is a static internet provider address, it looks like a home address to the website, so it has the most trust among static formats. It is many times more expensive than IPv6 and is taken for a different task: not volume, but passing checks.
IPv6 and Mobile
Mobile is a mobile operator address with the highest level of trust and the ability to change IP by link or timer. This is the most expensive format, and it is taken individually. IPv6 is the opposite approach: many cheap addresses.
IPv6 and Residential
Residential is a rotation from a common pool of more than 20 million real user addresses, with payment for traffic, not for the address. They are chosen when coverage by countries and cities is needed. IPv6 addresses are permanent and payment is per address.
Short rule of choice
IPv6 is needed when many addresses are required at the lowest price, and the target websites support this standard. If they do not support it — take IPv4. If trust from websites is needed — ISP. If address change is needed — Mobile or Residential.