This is what I am going with, but it is pricey:
250-DS-UDXRP: This model comes standard with all the basic instrumentation needed to operate your vehicle. Standard features include engine rpm, water temperature, oil pressure and battery voltage. You can optionally add oil temperature and fuel pressure by simply purchasing the required sender. Need more sensors? The VNet port will allow you to add up to 32 additional channels for the ultimate in expandability. The UDXRP model can record up to 10 minutes of data which you can play back later on the LCD display. You can also upgrade this model to download recorded data to our DataLink PC software for complete analysis. ($825.00)
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I like that I can play back all data after a hard climb, stores 10 minutes.