Beautiful shots, Surapon!
Love the one with the little girl on the bridge Surapon! the back light portraits are great too! can be tricky to get right.
I have the lastolite ezybox 24" thanks to suggestions by neuro, RC, and some others. So I can personally recommend it now. It's fairly portable and offers great lighting for single and double portraits. And i wanted something of good quality. Not the cheapest though.
100D, EOS M, EF-M 18-55mm f3.5-5.6, EF-S 18-55mm IS STM f3.5-5.6, EF 28mm f1.8 USM, EF-S 10-22mm f3.5-4.5 USM, EF 40mm f2.8 STM, EF 85mm f.18 USM, EF-S 55-250mm f4-5.6 IS, 430 EX II, triggers, lighting, stands, remotes, etc...