Are you a homeowner? Do you forsee needing a compressor for other projects around the house? If this is the case, then definitely go for a decent compressor. A good pancake or other small model will do you well. When I was in college, I did some airbrushing and in a dorm room, a giant compressor was pretty much out of the question. So, I invested in one of the smaller ones, like you first posted, the gray portable one. To be honest, if you don't see yourself using it for anything other than airbrushing and you don't do a lot of airbrushing. I would say, the smaller ones can be a good fit. I still use mine when I need to do a quick spray of something. Mainly because I don't have any kind of a "Shop" set up where everything can be together. I'm really not trying to steer you in one direction or another, just more so giving you advice from someone who owns 3 compressors now. All of varying sizes and all which fit specific jobs better than others. I will admit though, The pancake model compressor I got this last year is probably my favorite. It's heavy, but, quite portable and holds a decent amount of air so it doesn't run all the time. I use that mostly for my nail guns though.