Also i want to maximise my chances of finding the best style that suits me early in the dojo search rather than touring them all.
Well.. searching for the fast way to the goal is not a concept I look for in Aikido..
sorry... just joking
Lot's of good advice in the previous mails. Taking a tour of the dojo's and choose the one where you like the atmosphere the best is a very good idea. Never judge a dojo on the affiliation, rank of the instructor, number of students or 'lineage-desciptions'. It comes down to what it feels like to get on the mat, and how they treat you - compared to what you search for.
You might even learn something new about your priorities if you open yourself up and try some dojo's that you would have otherwise passed by.
Hope you find a great place.