I can second the DH Labs recommendation, very reasonably priced as well for the quality.
And I do not see 4, 5 or even 6ft as being a huge issue, but the shorter you can make it the less likely you are not to have any signal issues.
And I do not see 4, 5 or even 6ft as being a huge issue, but the shorter you can make it the less likely you are not to have any signal issues.