The reason the ME modelfibers aren'tthat bright is that the fibers go into the hole for the LED. The adjustablility is great on the sight and if you really want bright fibers you go aftermarket. People do that with even the Spott Hogs.I shot mine for a few months with the OEM fibers without any issues indoors. Outdoors they were bright enough.

I like my ME and would buy another one just for the adjustablility and then lock down features of the sight. Once set the pins aren't going anywhere.

However, it's your money and your choice what to buy.