Enterprise is just a company that you go and register yourself at the local council.
As for S/B company, you have to go to register at SSM.

A) Enterprise
Pro :
1) Easy to setup. In my town, I only buy a form with RM 1 at local council and register my business.
2) You can do the account by yourself but make sure your account tally at the end of the year for you to submit to LHDN.

Con :
1) If you owe peoples money and are unable to pay them, you will be declare bankrupt as you yourself will take the liabilities.
B) S/B company
Pro :
1) If you owe peoples money and are unable to pay them, your company will take the liabilities, as you have a sum of capital prepared before you setup.

Con :
1) You need a capital before you can setup s/b
2) You need a licensed auditor/accountant to audit your account for you yearly and submit to LHDN. Around RM 2k-RM 2.5k.