What size do you wear compared with your normal shoe size?

My very 1st TOMS I got my size, 6.5

Then 2 months ago I got some in 6.5 and they were slightly big

Then I got a pair 2 weeks ago and they are HUGE and still 6.5

I emailed TOMS and they said they suggest you order a size down - however lots of reviewers say order your normal size - ugh - I hate returning things!

I was able to successfully shrink them but wondering if next time I should order a 6?