[mothered]

so does just using a new dedicated/static vpn with a new instance of firefox with all history/cookies deleted not work? will they still link you ?

Using a dedicated VPN/IP Is not good practice- It's a lot easier to Identify your movements If under Investigation.

Opt for a server that's shared by thousands of users. The objective Is to be part of the majority, and not the minority. Using any of the major browsers (FF, Chrome, Internet Explorer, Opera etc) will suffice.