I am currently shooting with the 70-200VR + 1.7tc which gives me a range of 320mm - but I need(want) more range. I would really love to get the 200-400VR but the strings on my wallet are saying NO. So my next alternative to satisfy my need for instant gratification would be the 80-400VR. Would this be a worthwhile purchase? Or should I be happy with my current setup and wait till some $$$ comes knocking on my door? Is there another less expensive (than the 200-400) alternative which will give me more range? Can I use the TC with it? How will that affect my images? I want to shoot mainly wildlife and birds with it, with the occasional sports shots of my kids. I am a newbie, serious amature, but aspire to something more. Thanks for yor input!