Don't get too caught up with your Littles, and don't think that because you have no obvious matches, that you have the "wrong" surname.
Just for interest, my OH's surname is within the top
15 in the UK. His Y-DNA test has the following matches:
11 @ 12 markers
3 @ 25 markers
0 @ 37 markers
2 @ 67 markers
None of these men share his surname.
I have joined the surname project, they have looked at his results, and claim he is a "singleton".
I have not investigated further testing to enhance these results, however I have just purchased an autosomal test to see what matches that throws up.

For contrast, my father is one of only 5 (known) men worldwide who have the same surname. His matches:
0 @ 67
4 @ 37
334 @ 25
1242 @ 12
Of course, none have the same (or even a possible variation of) his surname.

I believe that matches at 12 markers are usually not very useful or traceable.
I have purchased an autosomal test for him too as he has an interest in "cousin" matches.
