easiest way to add simple user authentication to a scaffolded rails 3 app? -

we have developed scaffolded rails 3 app hosted @ heroku, without type of authentication far.

we have precisely 2 types of users, our customers, have single record in our customer table, , have access 3 or 4 views in customers controller, , our internal admins can access views in controllers.

we'd prefer customers usual self-register (creates "empty" account), authenticate via email (enables account), change password, lost passwords etc.

each user account have 1 user. no need differnet users in same acocunt different roles (not yet anyway).

so far i've read devise , authlogic... i'm hoping recommendation what's best solution basic scenario... relative newbies @ rails basic , easy setup best. creates default mvc objects handle account creation/login etc ideal.

---

still researching excellent suggestions, thanks...

for simple authentication, check out ryanb's nifty generators (https://github.com/ryanb/nifty-generators). can create scaffolded authentication go along scaffolded app. if want change later, won't have tossed work away.

devise great big hammer "simple". can spend while getting devise work right.