Don't worry man, I'm in the same boat as you at 5'-11'' to 6' (not compeltely sure... need to remeasure myself
) weighing around 208. I really need to hit the gym!
In any case, any keeper top should be fine! Just buy a size that fits. When I bought my Puma Barium, it fit me perfectly in an XL, however I always needed to go up to an XXL for a few jerseys from Adidas and Nike. Just go to a store and try on different models from differents brands at different sizes.