Is it profitable to mine bitcoin ( do not count in Electricity).
That's a silly notion. Of course it's profitable to mine if you don't have any other reoccurring expenses outside of the initial hardware purchase (e.g. electricity).
How much can I make maybe with my 5k-8k budget of hardware. Please help me with my choice of hardware too.
Ah yes, the most common questions posed to this subforum...the answers to which are already noted in some of the top threads in Mining Speculation. Good thing you already read through them all, right?
TL;DR - Revenue depends on the speed (and quantity) of the hardware and the network difficulty. Top recommended manufacturers: Spondoolies-Tech and BitMain.