Everybody always wants the newest thinking it will get them more gold. If you are losing gold, THEN YOU DON'T KNOW HOW TO PAN PROPERLY! Blue or green doesn't matter, they are just personal preferences, and one or the other may work better for different vision issues.
If you are a beginner, a medium pan with several riffles (I like the blue Proline) will help you keep the gold in your pan.
If you can properly work a pan, you don't need Miller Tables or Blue Bowls. Unless you are using bigger equipment that generates a buttload of concentrates, all you need to do is learn to pan. I'm not the fastest, but I am pretty fast, and I have never lost a bet having someone pan my leavings.
One bit of advice though: when you are working at your Honey Hole, keep a LOT of black sand in your snuffer bottle! That way, when some nosey stranger wants to see what you have gotten, you hold up that thing and all they see is black sand. Act like you are really excited, and tell them you heard there is always gold in black sand! They tend to move on, and you get to work in peace again.
Mike