I sympathise with your dilemma. Is this an employment based workflow that is virtually impossible to untie yourself from or is it a personal one which has crept up over time as additional products were purchased? If personal, likely you have made a somewhat substantial financial commitment in becoming tied to the ecosystem. As you are undoubtedly aware, you could slowly untie yourself over time or do what others have done (with a financial hit) and pull off the bandaid quickly all at once. As you have probably read in the "Are you abandoning ship" thread, a few posters switched everything at once and then did not allow for a fair transition period, got frustrated and at great expense came running back to the Apple ecosystem after less than one month.