I want to buy rainboots.

The Rainy season will begin soon. It rains a lot in Korea., so I decided to buy good rain-boots this time. However, I don't know anything about rain-boots and there are so many brands. I went to a department store to try it on a pair but it was hard to choose one thing (Nothing I can really think of wrong with the word "thing" here, but it seems more natural without it) . Originally, I was supposed going/wanting/intending ("supposed" implies that you were instructed or had a real need, rather than a desire, to buy a specific color. One of the suggested words is probably better for the situation) to buy black or navy color boots but pink or red color ones were also attractive.

Hope this helps!

-Eli