Dont be fooled by cheap lesser quality imitations. Word is they will be back in stock later this month. If you can hold out as always they will be worth the wait.
If you need a great ball that is actually in stock you can always call AD Starr and get the Tattoo classic M. They are shipping daily and plenty of great reviews on the message board.
I don't know about those but we play with .44/ 525 and we like them alot