Feeding advice please

[only_me]

My lab is now approx 8 months old and has always been quite a fussy eater.

She eats what she is given normally, but just very very slowly - would take her aprox 5 minutes eating 2 coffee mugs worth of food (which am told is unusual for a lab ) and looks good - perfect weight and a good coat.

so far she has been on - JWB as a pup but changed as poos were very runny, .She was then on Beta which she ate but again very slowly. onto Bakers which she loved and out of everything would be her fave, but was never going to feed long term. Changed her onto Pedigree but again ate very slowly. On advice of a pet store changed her onto their own brand which was proper nutritional food and a very good food with a high % of meat. She again ate very slowly but as always cleared the bowl. Then asked vet and he suggested trying royal cannin (not ideal as very expensive!) but same again, very slowly eating.

She was on each type of food for approx 3-4 weeks giving everything a go and was changed slowly onto each different brand to give her time to adjust.

Any suggestions for food? She usually always eats her food but never seems to enjoy - my next brand was to try wainwrights? But I don't know enough about the brand tbh.
And please no comments about whether you think I am a numpty or not, I am not stupid but I don't know enough about dog food other than the main few brands as mentioned above!
Thanks

Some recent pics of her
Using the drinker (she looks a bit odd stance wise, but can assure you it is the photo )

Her favorite place to sleep!

 

[CorvusCorax]

I would not worry about slow eating TBH, better than her bolting it and make sure you are not overfacing her, don't feed by what it says on the packet, feed by eye.
That's quite a few changes in a short space of time so give her a bit of leeway and bear in mind that changing it constantly will MAKE her fussy, if you see what I mean.
Make sure you are not standing over watching her eat either, dogs can find that a quite high pressure thing to deal with.

Try Wainwrights, I use it for my adult dog, or Skinners Duck and Rice which is a good cheap dry food. Arden Grange is up the price range a bit but again a good food.

Have you tried her on any sort of raw? Prize Choice do frozen blocks of different types of meat in convenient sizes for the freezer, they are cheap enough, from the freezer sections of Jollyes and Pets at Home, maybe try her one or two days a week to see if that makes a difference

She's well enough covered, I wouldn't want her any heavier than that if she was mine

 

[MurphysMinder]

As long as she is in good condition, I wouldn't worry about the slow eating. I had to put a large rock in my girls feed bowl to slow her down, would have been delighted if she had eaten slowly. Are you feeding her the meal dry, because that slows them down, also I only feed my GSD 1 coffee mug of Skinners D & R (although the instructions on the bag recommend 2 for a GSD), it is possible that 2 mugs is a little too much for your girl, although I do appreciate that other feeds are fed at different quantities.
You say she is fit and healthy, so I would just stick to one decent quality feed and let her eat at her own pace.