I agree... I have heard a lot of good stuff about the Omni 4000, and as an owner of the Badger 155 (sister airbrush to the 360, identical except mine is siphon fed only, the 360 can do siphon or gravity feed) it's an excellent brush.. able to get down to some tight places on the model with not a lot of overspray and some good detail! best thing is the cleaning of this airbrush takes just a minute or two and presto you are done!!
There's a lot of good ones out there... Omni, Badger and Iwata seem to be the most commonly used here... what type of models do you build? aircraft, armor and ships all can use certain airbrushes universally... but some do better for certain types of modelling than others.. (i.e. if you do 1/72 aircraft mostly, then something with finer detail capability is a thought.. 1/35 armor you wouldn't be SO concerned with smaller detail etc...)
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if you just copy and paste the same text you did into your sig for the pic, but into the body of your message, it would work better! usually we use our signatures for personal things and group build badges.. but pics of builds etc. are put in the body of the message where they are seen first