the entire line of BR helis (BR, BRII, Mini BR, Micro Mosquito) are all slow in terms of speed, and there really isnt a lot to get past that, its just part of the design. going from a hover to forward flight is where most people have problem, this heli cant be flown like the Picco, it takes very subtle and soft inputs on the TX sticks or it gets out of control (the control issue is compounded by the fact that the first run production helis were a little tail heavy, so when you go from forward flight back to hover, it makes it rock back and forth even more). despite the problems some folks have with the MM, i'd still take it over the picco. i do love the picco, but i can put the MM anywhere i want every time.
DJ, try the POT mod that i linked to a few posts up for RC18. you may have to adjust the POT because the tail motor might not be getting full power when you give it full power. this is the important part of the idea: "adjust the trim-pot marked SW3 a little in the CCW direction until you reach full speed when your stick is pressed max forward." there's pictures to show how to do it in that link.
RC18, the tail motor only turns on when you push the stick forward, it can be run while the main rotors are not spinning. there may be an electrical fault somewhere on the RX or TX. i've found that if you find the "right one" it flys very nicely. for some reason, ITC (maker of the BR/MM) has had constant problems with their first run productions. if you have enough problems with yours, and dont feel like tinkering with it to get it working right, return it and save the cash till the 2nd generation comes out. with that said though, it usually doesnt take much to fix the little things to make it run well. or, you could just junk it, rip the RX out and stuff it in an AA and use the 3rd channel for an elevator on the tail
of course, some dont think they should have to tinker with a toy they just spent 70 bucks on just to get it to work right, and thats understandable. i personally dont have a problem with it, but thats mostly cause i would've tinkered with it anyway. like i said though, for as much as i like the Picco, i'll still take the MM. it takes more trimming and more effort to fly it, but the results are a more smooth heli with a much more precise feel.
nick