How to select one particular mutual fund for investment?

Suppose there are 4/5 mutual funds which all seem very good in terms of return. If I am planning for long term investment, how do I choose say 2 of them for investment through SIP? How to compare various important factors, in particular, how to decide if in future, the fund will perform well? (all MFs give warning like this: past performance is no indicator of future performance). Can you suggest any good websites which help in this regard?

mutual fund?

mutual fund – Is it possible to redeem online, those schemes which have been purchased offline after change of ARN number? If yes, how off line schemes / certificates will convert to online form? Details of this process are required.