I went and picked up that Merc 5 today and tried it out for a couple hours to start the break in before I go fishing tomorrow. I love it! Its so light, not bulky, I don't have to worry about it being too heavy on the bracket, and it is not nearly as noisy or smokey as I thought, even with the 25:1 mix now. I'm not sure how fast it pushed it at full throttle because I forgot my fishfinder with the more accurate speedometer because my main one doesnt register that low, but I'll bet it was around 7 or 8 mph and it wasnt real calm out either. If I'm stuck somewhere, all it needs to do is go 1 mph and I will get home eventually! Well hopefully I can get rid of the other one soon, a lot of people have looked at the auction. But I'm very happy with this one, and with the dealer. That engine looks so simple, I can't imagine much could break on it.