What best value inflatable pump for medium dinghy?

It may be worth looking for one that also evacuates, as that can make the dinghy easier to stow. My current Avon pump does this and I have seen the same sold under another name, presumably the maker.
 
Don't be tempted by one of the cheap camping bellows pumps. I tried them; they may be OK for an airbed, but for an inflatabubble they are useless. Far too flimsy.
The only decent one which I have come across was the old Avon pump, but it comes at a price.

Personally though, I prefer an electric pump, with a double acting hand pump to top up.
 
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