I usually leave all titles and associations out after my name. my work speaks for itself and is adequately explained in my CV.
As "tag line" i use "Results producing <title of most recent job>" <-this may be industry specific though, since in my industry, the only thing that counts is measurable productivity/performance increase, ROI and cost/ramp up/benefit ratio.
I reuse the same slogan in my cover letter to create the necessary connection between the 2 elements. Each one is stand alone, and if read separately at different times, the headlines tie them together.
The gist of it: Find out what the most looked after traits are in your profession and target the 2 main keywords, formed into an action sentence.
Then for the resume, if you have experience, i'd suggest not to start out with an objective, but rather a summary of qualifications in form of bulleted key words, followed by a short summarizing sentence. Then, move into the professional experiences part, outlining/highlighting specific accomplishments.
(high volume HR departments & recruiters are well versed in scanning for keywords, some have software doing the job for them. you want to hit the keywords that they're looking for as early as possible to remain on top of the stack - especially when they're scanning the resumes manually)
If you're a recent college grad, with no or little experience, then it's worth looking at the objective first and then follow with your strong suits in bullet points. Obviously, with no experience, it's tough to come across with competent and concise action words that describe your professional persona, hence the objective becomes more useful.
M.