Don't take the offer from this bigger company as an indicator that you need to demand that much from your current company, they are two completely different sit

Don't take the offer from this bigger company as an indicator that you need to demand that much from your current company, they are two completely different situations. If you choose to negotiate with your current company, only do it from the standpoint that you are worth that much to them because of the revenue you bring in or because of your productivity. They don't care what someone else is willing to pay you, only you care about that. If you choose to go to the new company, just make the decision and do it, don't give an ultimatum or anything like that... if you do that, they might give you what you want initially but there is likelihood that you will be let go in 6-12 months, or at least shoot your chances for advancement in the foot. As far as career... having varied experience is probably good, but working in the bureaucracy of a large organization can be soul-sucking and exhausting.