I tried FTM having used countless other programmes over the years, and the fact that it links directly into Ancestry to give you "matches" on your relatives has been a godsend for me.
The amount of information I have found, and numerous new relatives I've been in contact with has been amazing.
Also helped me go back another generation on one line (I double-checked everything myself obviously).
The only downside is the false-positive results, but if you're confident in your abilities, or already have a lot of info on a particular person, you can cut through that quite quickly