Judging from the pictures ONLY, the Menards trucks seem similar to my most hated Lionel plastic trucks. I have not had the 2 side by side to do a direct comparison. I do think the decoration on the Menards is not all that bad. I have always disliked plastic trucks! Cheep cheep cheep!
The only Menard's car I have so far is the Army flat car with Tank from several months ago (maybe even a year ago?). It had the plastic trucks and had trouble staying on the track. I added weights and that helped. I didn't upgrade the trucks like PCRR/Dave did, but I just happen to have ended up with a set of MTH trucks recently. May give it a try one of these days.
However, I believe Menard's heard the complaints and agreed about the trucks not being the greatest and has since upgraded them on their latest releases. I have not purchased any more rolling stock lately since I heard this though, so I can't say for sure on the newer ones. I think they watch the forum here and listen to us about their products. From some of the reply posts Menard's has made here, I really do think they are trying very hard to put out some good quality products at very reasonable prices, and for the most part they have been quite successful.