I've read numerous threads and seems that the best that most use are skyns but which ones? I've just been on amazon and there's loads!! 

You need to keep a few Skyns in (or equivalent) as some clients are allergic to latex. I'm only aware of three: standard, extra lubricated and XL.

Don't buy from amazon - use the NHS Freedoms shop.

I always avoid Durex as they're the brand I've found to be most prone to breaking. I use Pasante Trim, King Size and Super King, and Mates Naturals as my main 'normal' condom. I also like Skins, which run a tiny bit smaller than other brands so are good for 'in betweeners'.

Most get Skyn Original: https://www.amazon.co.uk/LIFESTYLES-SKYN-ORIGINAL-CONDOMS-LUBRICATED/dp/B014XHMLU2/ref=sr_1_1_a_it?ie=UTF8&qid=1505872818&sr=8-1&keywords=skyns%2Bcondoms&th=1

With all new condoms you test out, do NOT buy a huge bulk box! Get around 10-15 to see if you like them or not, then you can buy more if you like them or look elsewhere if nec.

I didnt get on with Skyns. They are non latex but left my vag smelling of latex, it was really odd! My brand of choice is My.Size and the equivalent to Skyn Originals are the My.Size 53mm - https://www.amazon.co.uk/s/ref=nb_sb_noss_1?url=search-alias%3Ddrugstore&field-keywords=my+size+53

I don't get on with Pasante at all. The rubber is thicker, particularly the rolled end and even the tiny ones leave me sore from the rolled ring rubbing at the entrance to my vagina.

I use as follows:
Small - Mates Conform
Average - Mates originals
Slightly larger than average - Skyns
Large - Mates Ultima
Very large - My.Size 69mm

I buy all except My.Size through NHS Freedoms shop.

It's very much a personal preference. As Gracious said, don't buy a huge order before testing different condoms out to see which ones you prefer.

I just thought of something else: if you put on a condom that's too small, it's more likely to break. If you have trouble rolling it down then I would rather say "This is too small, isn't it, let me get a larger one" and go up a size. No customer has ever complained

You need to keep a few Skyns in (or equivalent) as some clients are allergic to latex. I'm only aware of three: standard, extra lubricated and XL.

Don't buy from amazon - use the NHS Freedoms shop.

I always avoid Durex as they're the brand I've found to be most prone to breaking. I use Pasante Trim, King Size and Super King, and Mates Naturals as my main 'normal' condom. I also like Skins, which run a tiny bit smaller than other brands so are good for 'in betweeners'.

on amazon is cheaper than NHS shop.
I never had issue about quality.

yes, of course if you can go to the clinic is better!
when i do have time...i prefer to order on line. Usually from NHS shop.

on amazon some good deal are from the brand himself.
So skins company are delivering that, pasante, etc....

going to the clinic is a good idea, as give you variety and new kind of condom, finger condom, etc...