I really like the RPM computers. They will do all of the standard computer stuff, but much less in cost. Have one on the funny-car and cannot believe that I ever lived without it. My set-up is simple. 8 EGT, accelerometer, oil and fuel pressure, vacuum, driveshaft rpm, engine rpm. Was just under two grand. But they will make you a custom computer with less of the gadgets. And it is less money obviously.
rpm (http://www.rpmperf.com/)