I'm going by shipped for simplicity.

2005: 1.5
2006: 6.7
2007: 9.3
2008: 10.8
2009: 10.2
2010: 12.1
2011: 2.7 (1Q)
Total: 53.6

X360 just had a record Q, shipping 1 million units more than it has in any other CYQ1. MS expect good momentumn coming out of E3 and going into 2012 (Price cuts duh)

So, although possible, it's unlikely they'll be down much over the collective 3 Q's coming up. Pitting them at just over 64 Million units shipped.

It would also put sales for the year at 13.3M, hows that for a 3rd, 4th, 5th, 6th year peak

I doubt 2012 will show huge drops, nothing below 2007 levels anyway, so 75 million plus is a good guesstimate.

After that I guess it depends on MS's support of the system.

I reckon if 2012 has good support and it doesn't drop like a brick, 90 mill lifetime is achieveable

2011 - 13/14
2012 - 10/11
2013 - 6/7
2014 - 3/4
2015/2016 - 2/4

Total 86 - 91 Mill

Where do you think it'll end up?

I was the only vote when I placed mine. I went with 80M.

Part of thinks I may be wrong though because I feel like the HD consoles appear to be gaining more steam as HD adoption rises.

Why do I think this? I have seen Source and others predict year in and year out that the HD consoles have had their peak years, only to see those years get surpassed.

Then on top of that we get threads and explanations about sales dropping YoY because of price point saturation and such only to find out that they aren't as far down as originally thought.

Your prediction seems just a tad high to me. I'd expect it to fall YOY during Q3 and Q4 CY and end up ever so slightly down YOY by the end of the year.

2011 - 12m

2012 - 9m

2013 - 6m

2014 - 3m

2015 - 2m

2016 - 1m

LT - 84m

I think it will settle around 85 million.

Anywhere between 80-90 million. 

Even with Kinect/360 price cuts?! 360 hasn't had a solid price cut in 3 years

85-90

I clicked 90.

Hmmm

I'm thinking somewhere right between 80 - 85 million but if the next box really doesn't come out until 2014 than it could be even higher.

I think it'll end up selling around 85m units.

80-85 million