So I researched on some of the most convenient lenses. Out of all of them (and believe me, I spent months comparing reviews and balancing them all out) I found myself debating between Canon 100-400mm L, and Sigma 50-500mm (OS or non OS still debatable). If I was asked this day, I still wouldn't know which "to buy." But the more important question is: Am I willing to spend the money?
Came the time when I saw an ad on Craigslist selling some old lenses. They're Contax/Yashica mounts but what got me is its brand: Carl Zeiss. I was initially attracted at the 28-80mm one. But in time, I ended up buying Carl Zeiss Vario Sonnar T* 80-200mm f/4. This is after days of research and asking around. And when it comes to the first reason why I wanted another lens (video purposes), the manual zoom, manual focus, and the action being very smooth, makes it more preferable to me than the kit lens. I get to save a lot of money, I get another lens that's all manual, and I get to brag it's a Zeiss... that latter part is just for those who don't know much but the name.
To this day, it's one of my most used lenses. But to this day, I have not had any chance to use it for video. I simply enjoy using it taking stills. I think I will be using this lens for a long time. I feel comfortable and much more into photography, now that I use manual lenses.