Hello!
Sorry i can't offer lots of advice as i haven't been through IVF yet, however i'm in a similar position in that i'm choosing clinics. I have a low AMH (6.2) but am slightly younger (33) - i have been keen to find clinics which specialise in these areas.
I have a consultation with Lister next week (and can share back any learnings) and have also spoken with CRGH on a mini-call.
I had discounted ARGH as i've heard they're very intense (almost daily tests and some expensive add ons). As it's my first round i'm not sure i'm ready for all that, but I expect that appeals to some people as they are essentially "throwing everything at it".
CRGH seem to offer a range of add ons too, e.g. they may use human growth hormone in poor responders, which i'm aware is contraversial and not used by all clinics, so i got the impression they also have a range of treatment options and approaches to try.
I spoke with my local Care clinic and really liked the Dr, however my only concern was that since i'm planning to do embry banking and testing, it's an area the London clinics seem to do on a more routine basis, so wasn't sure they would be as suitable. The real advantage for me of Care is being close to home (20 mins vs over 1hr to London)
I've been told the first round of IVF is a bit of trial and error to see how your body responds anyway.
Anyway, i hope you get some responses as i'm keen to learn too! x