Does anyone have this lens to go along with the Sony A700? If so, have you taken any indoor sports pictures with it? What do you think about it?

I take a lot of indoor sports pictures of my grandkids and I use the Tamron 28-75 right now. I need a bigger zoom lens.

Any ideas would be appreciated.

I would really like the Sony 70-200 but YIKES - quite a price difference.

Thanks.
Dawn