I'm an indian citizen, need to travel Singapore, pls suggest to apply for a Singapore Visa & pref channel ?

As an Indian citizen, you are indeed required by the Singaporean government to get a visa to enter Singapore. You will need to apply in person at the nearest Singaporean embassy or consulate. There are three different locations for the Singaporean embassies in India.

General Consulate of Singapore in Mumbai, India
101, 10th floor, Maker Chambers IV 222
Jamnalal Bajaj Road
Nariman Point
Mumbai 400 021
India
Phone: (91 22) 2204 3205
Fax: (91 22) 2285 5812

High Commission of Singapore in New Delhi, India
E-6 Chandragupta Marg
Chanakyapuri
New Delhi, 110021
India
Phone: 001-91-(11) 2688-6506
Fax: 001-91-(11) 2688-6798

High Commission of Singapore in Chennai, India
No.3, 8th Street
Dr Radhakrishnan Salai
Mylapore, Chennai 600 004
India
Phone: 001-91-(44) 28471541
Fax: 001-91-(44) 28470544

For accurate/correct information on the requirements, just contact any of these embassy branches.