.net vs Salesforce career scope

Question

Hi i am in php from past 1.5 yrs however i wan tto switch my technologies for career growth i am little bit confused between salesforce developement and .net, could you guys please help me wiith the correct resolution as i want to knwo abou the career growth if i became a salesforce developer of .net developer.

Honestly i wan tto become a .net developer but some of my seniors suggest me that salesforce have a better futture in terms of salary.

Please suggest me the right way.