I would go for the Tamron 70-300. My friend has it and likes it. I read the reviews which are mostly positive. My son has the 55-250 and I have tried it. it's OK but the images are a little soft. The reviewers also say the images are soft. My friend bought the Tamron on sale last month. Check and see if they still have the rebate.

MT, where can we read your review of the Nest Gimbal?

MT, where can we read your review?

Incredible pictures. What do you feed them in the bird feeder?