so i am really diggin the 200 f/2.8 (i used my friends 5d with that lens L series and loved it) and am thinking about getting one for sports and stuff.. problem is that they are bloody expensive. but i have found some on ebay for under $600- thing is that they are the older models. they are the push/pull models? i have never used a push/pull model and i was wondering if they are as good or any problems? Nikon 80-200 F 2.8 D is the lens i am looking at.. also how is like the glass? pretty sharp? there are a lot of positive reviews on amazon but i think its for a newer model of this lens. there are many versions made of it..