I put the beveled edge forward, since on my tank the silicone was better on that side. Once the tank is filled with water the bevel is essentially invisible (except the top edge I guess). When I first saw it, my reaction to the bevel could be summed up as "meh" at best, and I strongly considered putting it backward, but it's grown on me and now I'm glad I put it toward the front.
Thanks for the info. I will do the same. Yeah, my reaction initially was also meh but i guess looking at the pics of ur tank, it doesnt show when filled with water.