@Phil **********
the retirement visa is easier the first time, but it requires more money to meet the financial requirement, and with a retirement visa extension you can never get permanent residency, as it requires that you legally work for at least three years, and file Thai income tax, plus a few other details, but working is the most important, and you can't work legally on a retirement visa extension. You can legally work on a marriage visa extension. With the marriage visa extension after you file the first year, and save copies of everything, the only updates you need in following years is new bank letters, and new pictures, unless you move. Just something to think about if you're eventually going to make Thailand your home with your wife.