I have a Century 3045, which is now the Zetor C47L. So when doing your research remember that the compact Zetor's used to be called Century. Without going into a lot of boring detail Zetor's are manufactured by Kukje out of South Korea. They also make the Branson line of tractors which is the Zetor's twin brother. Kukje also has made a very well known brand <font color="green"> tractor </font> for their oversea market.
I did a 2 year search before I bought my tractor starting with the "Big 3". After that I looked at the lesser known tractors. I looked at the Century line after hearing about them on the internet and I am glad I did. The Century is extremely well built, HEAVY, and substantially cheaper than the other brands. The Century 3045 had the exact same diesel engine as the comparable John Deere that I was looking at. I saved from $3000 to $7000 over comparabe "Big 3" brands.
I have been really happy with my 3045. The heavy weight and high lift capacity of the C50hl loader has been impressive.
Those of us that have Century/Branson/Zetors I think will all agree that we are very happy with our decision and had a large amount of $$$ left over compared to other brands. Those of us that have had warranty items have been happy with the work performed and commitment to get things right by the dealers and the company.
Hope this helps a little.