Beating the Cross-Matcher

Before the cross-matcher came along, it was beneficial to offer what you would believe to be true price bets and you would frequently get matched at better prices.

Now though, I seem to get matched at extremely close to what I offer up, so am now wondering whether it is now better to offer slightly worse than what you believe to be true value. Obviously this could result in a lot more unmatched bets but is anyone finding this a better tactic than offering true value prices?