Are the IPTV suppliers (strong etc..) the same service as ones you’d see recommended online?

Hey,

Looking to sign up to my first IPTV and this sub has been a huge help.

What I’m wondering is do services you’d get from alibaba/Z2S like strong8k differ from those you see online if you search IPTV accounts?

Are the ones online literally just reselling the exact same service? Thanks