hello,
I’m looking to host some domains for that i want a new web hosting account. I’m wondering if shared hosting with add on domains or reseller will be better for me.Each domain name will have some subdomains, a few mysql databases and an email address. Can I do this with add-on domains? Any disadvantages for this?

U can use addon domains
I’m using 1 hosting account to host multiple domains.

if you are going to offer hosting to others then choose Reseller web hosting plan.

cpwebhosting.net allow Unlimited SubDomain with all shared hosting plans

one advantage to having domain addons are that you have the ability to manage both the main domain name and the addons with one single control panel.

If each domain will likely belong to separate customers then choose cpwebhosting.net Reseller web hosting plan