I am thinking of getting an airbrush kit, any tips, tricks and brand suggestions would be great.
or do you think its a big purchase for just a hobby, 
Thank in advance
don't have many tips on WHICH one to buy, mine was given to me and I have a kopykake airmaster compressor and an Iwata gun and I love them!!
I use my airbrush on a minimum of 95% of my cakes! 2/3 of them have color sprayed on, the rest of them have pearl spray added on once the cake is done. Not sure WHAT I'd do without my airbrush!!
Mine was an anniversary gift from DH several years ago and I just love it. I'd suggest looking at howtoairbrush.com for some basic lessons in using the airbrush. Mine is the Kopykake airmaster and like KHalstead, I love mine.
My thoughts are....
1. Why do you want one?
2. How many cakes have you done where you said oh man I wish I had an airbrush?
It is so easy to get caught up in how great a product can be but we have to remember how likely we are to really use it. When you do it as a hobby you have to consider how many cakes you do and if it is really worth it.
I will say, I do love my airbrush and am happy I have it. I haven't used it on every cake, which is totally fine with me. But there are a few times where I was really happy I had it.
Now the edible printer I bought, I have used it all of two times I think. 
And when the cricut came out, I was like nope I'm not going to call into that trap of it being the next biggest thing. If I had a cake shop and did a ton of cakes maybe, but with as few cakes as I do, I wouldn't use it enough to even make it worth buying it.
Thank you every one,
TexasSugar thats exactly why i am debating it too, I know I wont use it very often, But the thing is I like to paint and haven't been able to figure out how to paint on a cake yet, so I was hoping the air brush could help me with that. Also I have money in my cake allowance 
as my DH calls it, so am trying to figure out the best way to use that.
besides how much color does it use,
Theres a basic one on amazon for $130.
Thanks again
bobwonderbuns thats a great website, and now I am realizing it might not be that easy to use..
sberryp 
Great question, I've been considering the same thing.... Good to see there is a thread on this subject....
Anna, if you can paint, you don't have to have an airbrush to do that. Honestly what I have used my airbrush for is all over color on a dark blue cake, coloring a bow black, and sparying luster/pearl dust on to cakes and bows.
You can paint on a cake (buttercream or fondant) with many different items. I'd look up some past posts about the subject.
Quote by @%username% on %date%
%body%