[john the joiner]

Hi there I am new to D.S.L.R. JUST PURCHASED 350 D which 70 300 lense ? my own choice would be ef 70 300 do is usm. due to its size only 100 mm long . I know this is the short end of long lenses.any comments and advice wellcome.I posted same quirey on BF. only one reply. purhaps this lense is not being used most other lenses quoted are sigma tamron or nikon.would this lense be not suitable for hand held use or is it the cost.thanks in antisipation regards john