I meant to chime in earlier but I got distracted by a few other things...
About a year ago, I picked up a used CRG Lane Splitter off eBay... just one.
I figured it'd be a good start since I got it really cheap.
A few weeks later I was visiting a friend in Phoenix & we went into Cycle Gear store.
I picked up two of their bar end mirrors and compared them side by side - they were both on sale. I couldn't see any difference, both were constructed the same, just different brands & different prices. I ended up buying the TrackSide
bar end mirrors. I think I got them on sale for about $40. Watch them, they do go on sale.
I eventually sold the CRG. And to be honest, I couldn't tell a difference between it and my TRACKSIDES other than the fact that the CRG had "CRG" engraved in the back of the housing.
I'm happy with my TRACKSIDES, it's hard to see vehicles that are more than say, 100 yrds behind you... well, SEE them no, DIFFERENTIATE cops from other cars, yes.
But I believe that's the nature of a smaller mirror, not a reflection of the specific branded product.