I am getting ready to decide on an engine monitor. I like the Advanced Flight Systems monitor the best (visually). It appears to function the same as the EI MVP-50 unit. Everyone says the MVP-50 is "better" and the way to go. Since they appear to function the same, why is the MVP 50 better. I like the AF-2500 unit because I can pick up the information visually beter than the MVP-50. But if it has bugs or is not reliable, I would rather not chose the AF-2500 system from Advanced. Any insight is appreciated. Thanks