First off, you are not going to grab any good attention or requests with an unprofessional attitude. That is for anyone. There is a lot of competition out there in our field but those who do not prove to compare or shite on anyone else's accomplishments are those that I would trust first. Those that feel threatened are the ones that are constantly either trying to improve for the sake of being better than anyone else or have no care to improve. Based on that, should give you a good idea of who to deal with and not. First thing to ask a designer is, "What do you think about this person(designer other than you)?" And see what they say about them. If it is negative, check out the reason they feel that way. Usually, and especially in the forums, there will be a consistency to that biased opinion and prove its relevance.
That would be my answer to the OP on this. Do some research, and ask questions to others and other designers about the one of interest when you get names and see what they say. If they say good things, then kewl. If not, find a relavence of why they have bad things to say about them, either due to high prices, bad attitude, etc. Anything.
Then you can get a better idea of who to work with or not, because asking a general question like this in this forum will yield quite a few of us to pin our focus on getting you to go with us, lol. For your benefit and our own. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
Hope that helps in a decision.
For my own personal recommendation, I know DonH, Buck, Ram, Prorabbit, and myself are the ones I know of that are professional at what we do and try to give you what you look for. I personally do this as my only income at the moment due to the need to concentrate on everyone that comes to me with enough focus to get a good design finished in a timely manner with things considered.