Buying new. I needed Photoshop, Illustrator, and After Effects for a ~12 month project. Buying each individually would have been more expensive than the suite.
Even if I decide to keep the subscription after the project is over, paying just $400 more over 6 years for the benefit of amortizing my business expenses, not having to worry about being out of date, and not having to predict ahead of time which tools I will need in the future (e.g. if I had purchased the Web Suite a year ago, I wouldn't get After Effects) is totally worth it (to me).
Even if I decide to keep the subscription after the project is over, paying just $400 more over 6 years for the benefit of amortizing my business expenses, not having to worry about being out of date, and not having to predict ahead of time which tools I will need in the future (e.g. if I had purchased the Web Suite a year ago, I wouldn't get After Effects) is totally worth it (to me).