another question - whch seatbox carrying system?

Once i have decided which size seatbox to go for (Beta or Team), I will be looking for a carrying system. I see there are three main chices:

1. Shakespeare seatbox Sherpa
2. Breakaway Seatbox conversion
3. Anyfish Anywhere Box Pack (I realise option 3 will only fit the Beta size box)

Can anyone tell me their experiences with the above?

Which ones gets your vote?

Breakaway seat conversion..... checkout breakaway tackle on face book, they do an additional bit of padding which is superb. I strap my rods, rest etc to my seat box and yomp for an hour down dirty wall.

I can't think of a better piece of beach tackle I own - its essential.

Thanks Chav Professor!