With all your bats that have broken, are they breaking in the same way?
This is the first time I have ever seen a bat break like this, let alone my own.
I have had 2 or 3 break similar to the way MagicMonty's Gray Nics has broke.
Haha that's quite a lot of cricket, how long does 1 bat normally last you? (5 nets and 3 matches isn't that much though!) You should maybe ask/look for a pretty hard pressed bat, and just try last the whole season with it. It will turn into an absolute rocket if pressed played in well. 
Sounds like a good idea actually.
I normally always go to V Sports as he knows exactly what I like.
He normally gets a long bladed bat with a low middle and chops it down at the bottom to a normal size so the middle is extremely low.
But I suppose most bat makers on here can do that..