manfrotto definitely out of your budget. the tripod itself is already beyond your budget. slik can consider actually. but the cheaper ones are flimsy. benro i have no idea. but iirc, it is slightly higher than what you have set aside as well.
may i ask if you are 190-200cm tall? if not why is there a need to stretch up to 170-180cm tall? you can get a tripod that reaches 15-20cm below your height, either maximally extended (less stable, but cheaper and lighter) or unextended (can go beyond 180cm if extended, more stable unextended, but heavier and more expensive).
at your budget, it is difficult to recommend decent branded tripods or even bootlegs (costing more than your quoted price if you are looking for a match of separate tripod head and legs at less than S$130). of cos there might be possibilities i might not know of, but i think you might have to source for unbranded (or brands unheard of) tripods, more typically those that can have tripod head and legs made into one.
for the cheapest branded tripod of decent quality, PPCP. the next line may be slik, giottos and velbon, and above that feisol and manfrotto.