Personally, for Orks, I tend to think airbrushing isn't really worth it unless you're going for an awesome show piece army. To get the full effect of airbrushing, you'll end up doing a crap load of masking. You could just do a simple zenithal grey basecoat and then do thinned coats by hairy brush on top of it, but that's a very specific style of painting that you may not want to get in to.
elStrages wrote:If you are doing a large amount of models. Like a 100 model piece airbrushing the base and large parts of colour will make your like easy as pie, I think I can 1/10 my painting time with airbrushing.
For me, personally, the base colour is the easiest part. I don't care about how neat it is so I just slop it on a few minutes per model. Because of that, I don't think the airbrush saves me a LOT of time. A bit, yeah, a lot, no. Especially when you consider the additional set up and packing up time.
You could also get the same benefit of speed by just buying some coloured sprays for your basecoat. Several companies sell coloured sprays you can use, they will save you even more time than an airbrush at a fraction of the cost.
I do like my airbrush and think it's a good addition to my painting arsenal, but if the first army you want to do with them is Orks, I'm not sure I'd bother.