Perhaps I am just too stupid to understand it on my own, but I cannot find reliable answers trough Google. Anyway, let me explain what I have on my mind. Please correct me if I am wrong, I am relatively new to security-related stuff.
I consider picking one of three setups:
a) no use of VPN at all - so assuming malicious ISP, he can see and log all the traffic
b) one VPN - protects from ISP spying except metada, but VPN provider can see and log everything he wants to
c) chain of two VPNs - ISP can see only metadata of first provider I connect, both VPNs see each other's IP, but is endpoint (last provider I connect to) able to decrypt all trafic?
What kind of data can both VPNs see in scenario c) ?
(Note that I am not either hacker or someone important, I just can't withstand feeling that all my data is in hands of either ISP or VPN provider. Everyone can set up VPN server and sell it under no-logs policy - you can't check whether he's actually logging or not.)