I would be very cautious of Lay 107 or books associated with Royal.....my personal experience with Lay 107 is that they withhold too many lines that can be bet on with other books.....especially halftime lines....they play way too cautious and defensive...
I didn't think I'd ever mention them both in the same sentence, but I'd stay away from the Royals and play at Olympic where they post lines on nearly everything and have a wide,varied menu at that....you won't miss a halftime line at Oly because they're not afraid to put out a number.