I haven't received either one yet, but I have both Flak and Flak XLJ Deep Water PRIZMS on the way. Not sure yet which one I'll break out of the package and which one I'll save. I have a feeling that I'll save the XLJ's for the future. I got the XLJ's for $54. Quite the deal. I got a Chase AMAZON credit card, and they gave me a $50 AMAZON Gift Card, so I bought the gift for myself. I love the PRIZM Dailys so much, I can hardly wait to try the Deep Water Polarized. I'm going down to Lake Erie and going out on the breakwater as soon as they come in. It's a two mile drive. I might just have to take me fishin' pole.