Loss, Choke, and Latency are highly dependent on your ISP and your connection to the server. By connection I mean the physical path that each packet takes from your computer to the server. You may experiance loss or choke for a couple of reasons. One, if you try to send more data than you connection is rated for from your ISP then you will experiance choke. Coke is defined by your ability to send information to the server and Loss is the ability of the server to send information to you. Two, (this applies for Choke, Loss and Latency) if along the phyisical path a router is overloaded or dies all together then this could dramatically impact your connection to the server. Most notably your latency. Latency is defined as the maximum time that is required for a packet to make a round trip from your computer to the server and then back again.
Hope this helps...
PS
Things change from day to day, so what were good rates one day may not be the best the next. Just play a few rounds and if you notice some choke or loss then lower you rates a bit.