pretty much all we need to know is you budget.

meantime, have alook at the prusa I3 mk3
Probably the best kit around. not the biggest - but top top quality.
https://shop.prusa3d.com/en/3d-print...-mk3-kit.html#

Around the same price bracket but about as different as you can get. Much bigger print volume, faster printing and way better to watch working. Tevo little monster: https://tevo3dprinterstore.com/produ...3d-printer-kit

to round it out a cube based machine: https://folgertech.com/collections/3...3d-printer-kit

There much much cheaper kits, and a few more expensive - but those three pretty much span the top end of the three main shapes.
Each one has it's own pluses and minuses, but overall on reviews none of them get many negatives.

On another note - are you actually in vietnam ?