SP 150-600mm F5-6.3 Di VC USD G2

I'm using this lens with Canon 60D for 3 years already. Had a big issue with the frontfocus at the beginning. Almost all the photos were out of focus. Brought it to Tamron service centre twice (one without 60D and one with 60D). They didn't fix the issue. I had to buy the Tamron tap in console and ajust the focus myself. Spend several weeks adjusting focus and finaly got much better result than in the beginning. The image quality and sharpness on 60D after adjusting the focus issue is rather good.

The apperture 6,3 is a bit blurry. I always use 7,1 or 8 appertures. They give much better result.

Lens is waterproof. Got caught by the heavy rain on Sri-Lanka for the whole hour. Everything was fine with lens after that.

Tried this lens on Canon 7D Mk2 and had the focus issues again. Now I have to readjust the focus with the Tamron tap in console for Canon 7D Mk2.

Overal - the lens is good if you get a good copy and if you adjust the focus of it to your camera with Tamron Tap-in console.

Have owned this lens now for over one year and I am pleased with it. Although heavy (any lens which goes to 600mm is going to be heavy - its the laws of physics) it is lighter than the Sigma equivalent.
I have found the focusing to be fast and accurate (particularly in live view on my Canon 90D) - it hunts now and then but I hired a Canon 600 f4 for a few days and that also hunted now and then - trying to achieve focus on a small bird some distance away is a big challenge for any lens/ camera combination.
I usually have it on a tripod - I just find it too much hard work to hand hold so I can't really comment on the vibration control.
It returns pictures which are sharp enough for me (see my gallery here on bird forum) and overall strikes a good balance between affordability, portability, and picture quality.