No such thing as 'standard' bearings. in this case there are quality and crud, and if you dont buy a good quality one then you could end up replacing it sooner then you think.
INA,Timken, SKS or Enduro bearings are very good quality
Hope technology used to specify Enduro in their hubs. Hope hubs are amongst the best out there. Not sure if they still use Enduro, but if you google the bearing number along with 'Hope' you should get pointed in the right direction.
Be aware though that you can expect to pay between 7 and 10 quid for a high end bearing, so dont buy one for a £1 because it says hope. Hope dont actually make the bearings so the cheaper brands offer theirs to suit Hope hubs, but they aren't the quality Hope would use themselves.
Also if you see '2RS' on the bearing, this denoted 2 Rubber Shields, as it its sealed both sides.
You can also pop off one of those shields periodically and repack the bearing with a good quality grease.
Have you any bearing drifts ? These are really important for getting the bearing fully seated and to go in parallel. Don't worry, they are quite inexpensive. Each bearing will have a specific drift the exact size of the outer ring so when you tap it in, it only puts pressure on the outside.
Available as individual drifts(support bushes to give them their Sunday name) like this example - as said, each bearing has its own specific press, so this is just an example -
Genuine Hope spare part
www.biketart.com
These are the ones I have. I've serviced a large number of Hope hubs over the years,and they seem to delight in bringing out a new bearing for each new hub. Easier and cheaper for me to just own the lot.
Genuine Hope Tools
www.biketart.com