Soldering Iron Questions

[epic_ziver_D]

I was unable to find any information about this,
What is the difference between TS-100 and SainSmart ToolPAC PRO32?
And what is better to buy, a TS-100 or one of these http://bit.ly/2DtoywS (Heard some good stuff about it from someone I know) or some banggood FX-951/888D knockoff (I can't really get a real one cuz cheapest I can get one where I live is at least 170$ which I cannot afford rn)
And in terms of tips, if I get a TS-100 should I buy the TS-100 shorter tips or will long ones do? and if I get T12 Hakko tips should I get original ones or are knockoff ones fine?
Also, does anyone have any experience with banggood?
These are a few questions which  I have been having a hard time finding a good answer to and would really appreciate any help

(I  posted it in the wrong section earlier and I had no idea how to move it, so I reposted it here)