SIP or voluntarily regualr investment in MF

#1
Hi all,

I am new to mutual funds investments, i have gone through some documents and blogs in the NET and got some idea about the MF and how it works.

now my doubt is whether to opt SIP method or voluntarily invest in MF.

i want to invest around 20000 every month, so that i can invest in 4 funds
(5000 * 4 = 20000) every month, based on the NAV i can choose within these 4 funds every month and invest in the best funds regularly so that i'll get good returns.

In SIP even though the market is high(i mean NAV is high) i need to invest in the same fund for the agreed period.

kindly give me your valuable suggestions on the above.

thanks
Bhanu