In hindsight, I see that "parkesppapa" was chided by another user in 2014 for posting non L in this thread (purchased for $350) which the OP "xarik" states is for L Series. However, the Thread Title does not state "L". It would be helpful to have a Mod correct the thread title if the OP is not able to do so. Title is source of confusion.
This thread caught my attention today as I'm considering options in the 100 mm range for for limited Macro work. Recently purchased a 77mm 500D macro lens (as Canon calls it). It worked fine for my one instance so far.