What do you think is the best, i.e. most useful marketing model?

I’m a fan of using practical models for marketing since I think a good simple model gives us a framework to assess how we’re doing things now compared to our competitors and planning marketing strategies for the future.
Simple frameworks are also great to help learn a new area – that’s why we developed ourRACE planning model for digital marketing to help structure content on our site.
The best marketing model?
I’m talking models since I recently saw a great poll created by CIM London to celebrate 100 years of marketing from the Chartered Institute of Marketing.
As a CIM Member/Fellow I thought it would be good to spread the word, so please take the CIM London marketing model poll.
I’m sure you have a favourite you’ve come across in your career. If you vote, you will see there is is a clear winner which I think is the right winner!
I’d also like to hear what you think about the relevance of these model in 2011. Have they had their day, do you find them useful, do you have better alternatives? Please tell us what you think in the comments below.
Since I’m a digital marketer, I have my own views on the relevance of these, indeed in my books I have often applied them. In fact thinking of it, most are included in my Internet Marketing: Strategy, Implementation and Practice. So I thought it would be nice to share the relevant ones here for anyone passing this way who isn’t familiar with them.
So this is what I think about their value to today’s marketer…
1. 7 Ps – marketing mix
Product, Price, Place, Promotion, People, Process and Physical evidence – these elements of the marketing mix form core tactical components of a marketing plan.

>> It’s right this is at the start of the list since it’s still widely used and I think is a great way to think through what a company offers. But it