Go with what you want but I have had the ESI hiway pegs for 3 years and they have done just fine. BTW, I weight 270 lbs.
I will say, if you are short or of average height, the ESI pegs are probably going to be too far forward for you.
Since I am 6' 4" with 34" inseam I need a footrest position quite far away from the original position. That means, that the KewalMetal and Rivco highway peg mounts are out of the race - too close to the standard footrest!

I think the mounting position of the ESI footrest would be a perfect fit for me, but I not quite sure about the rigidity ...

My main problem here in Germany is, that I am not able to take the parts in hand to decide which way to go. I have to make my decision by looking at pictures in the Internet and by reading user reports. Therefore, I really appreciate all your comments.

Regards,
Alex