In defence of Bolantej- i don't think he was being critical of your post- pretty sure he was just asking if you had any questions that needed answering
My own experience of the 75-300 IS has been -
The image quality is quite good at the short and mid focal lengths,but not quite good enough at the long end.
I also found that i rarely used the image stabilizer feature so it probably doesn't surprise that i think this lens is poor value for money.Of course anyone that CAN make good use of the image stabilization would look at it differently.
Happily canon have now replaced this model with an (apparently excellent) improved version which looks like it might please a whole lot more users 

