Um, all due respect to you big airplane fixers, but I'm still really enjoying fixing little survey aircraft.
You get 1 aircraft all to yourself so after a while it's up to your own personal standards, travel (as was said, some good spots, some really bad), stay out a while and the taxman forgets you.
Job Statisfaction.
Spannersatcx was dead on about hangar working before field or ramp work. Nothing worse than learning a system while the wind blows hot sand down your back or up yer...never mind.
If you're a pilot, even a private pilot, you'll be that much more valuable to a survey company. If you can deal with computers you're just as valuable, but more of a dweeb.