Duchesses rather than Senecas at Wycombe :-)
Nicer to fly and usually cheaper !
Also you will get one to one attention all the time - Normally it's one, two or three IRs on the go - So no "sausage machine" and still with the chance of some back seating.
No navaids at the home base, but Cranfield is "up the road".
A relatively small number of normal test routes - so you should have already flown most permutations before test !
Generally good first time pass rate ...
Certainly worth considering - Any place on your short list is also worth visiting before committing £££ !