The ONLY important things are that you find a good instructor who you get on with, and that you feel happy with the school and the way it's run after having checked them out as thoroughly as you can.
The costs sound very similar, and are likely to be. Whichever aircraft you learn on, you can easily convert to another after you get your licence. If you learn somewhere small with A/G radio, such as Sherburn, you'll probably be happy making your own decisions, but not so confident at following ATC's instructions; the reverse will be true if you learn at a larger airfield. But you'll need to learn to deal with both types eventually, so it doesn't really matter.
If you find a good, well organised school, and an instructor you get on with, you'll get your PPL in less hours anyway - so it'll save you money in the long run. So don't piss about trying to save pennies; look at the things which really matter; it'll save you money in the long run and you'll enjoy it more anyway.
I speak from experience
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Whirly
To fly is human, to hover, divine.