If you do not already have an EGT, the Aeroforce is a good way to go for being able to see a lot of parameters with one gauge (it has 2 digital displays per gauge). They are not really cheap, but pretty handy (I have a dual set). If you use the analog inputs, you can also wire them into the analog inputs on EFI. The down side is that the Aeroforce must be unplugged to use EFI for logging.