Would like to know if anyone has this combo and if so what are your views.Ive had the D90 for 9 months now and love it, use it with a 70-300 vr mostly for birding and nearly always in a hide.Im seriously thinking about getting the 300mm f4 with a 1.4 tc but am a bit concerned about the weight when attached to the D90, ie the body not being as big as the D300/700.Would appreciate some feedback,Cheers.