One thing people aren't considering, is that depending on the disc and player, they can actually make more off of Tour Series Discs.
I'm not saying its the norm, but let's say Player A gets $5 per Tour Series Disc and they sell 5,000 units. That's $25,000.
If Player B gets 25 cents from every Signature Series Disc, they have to sell 100,000 units to see the same amount as Player A.
Keep in mind with Signature Series Discs, you might have a limited selection to choose from, meaning your ultimate choice could be a disc with lackluster sales numbers.
With Tour Series Discs, you apparently have a wider selection and can have swirly, glow or other selling points added to the already popular disc. Plus the limited nature actually helps sales.
Which would you rather have?
You also need to consider, if Innova runs 100,000 Sig Discs and they don't move, it will probably be a bit before another run.
If the Tour Series Discs sell like hotcakes (which some do) then they will most likely do a 2nd or 3rd run.