My Jacket is an 'Englands' something or other, purchased from Somers for £55.00. It is both manual and Auto, which was not what I originaly wanted (I too had been reading other tubing discussions & thought that manual only was the norm.) but it was bought in a hurry and now I'm glad I did.
I've used it in a few chops and it's not given me any problems.
Depending on your fishing preferences you might find yourself using it in a boat, on the river, etc. where the auto feature might save your bacon, might also make you look a twat if you fall in but better that than brown bread.
Hope I never have to use it.
Dave, along the idea of your trying out a vest - my Tube (Shakey) has 5 bladders, 4 of which are inflated during normal operations ....I wonder how many and which ones I could lose and still be supported?
I'm off to the bath!
Iain