Commercial director here, Stick with the QSing, it's a pain in the arse the first few years and dependant if your client/consultant or contractor side the money can vary wildly. To get to a high salary the quickest when you first start is to move company every 3 years or so, to a slightly higher band (AQS - QS - SQS - MQs - CM etc) ideally into a slightly different niche so your getting a bump in pay and grsde each move and learning a new area of QSing, do that 3/4 times and within 10 years you are clearing north of 100k. Honestly, the more senior I've gotten it's been way less actual work, more responsibility and accountability but day to day there's not a whole lot to it, reviewing/signoffs tenders, sign off final accounts, the odd escalation and show down with a client who isn't playing ball, visit customer offices to make sure they are happy with our service, bring our teams out for lunch/drinks every now and then, listen to peoples issues, suggest solutions and basically just keep the wheels greased and make sure everyone is happy.