Most themes are woo friendly, so let's start with Themeforest.
2018's Best Selling WordPress Themes - updated weekly
https://themeforest.net/popular_item/by_category?category=wordpress
There are many here that have stood the test of time and are well supported.
Take time to review the demos. Check it's overall rating and read some of the comments users have. It's also important to read the developer's response as it gives you an idea of what to expect regarding future support when you need it. This is especially important when/if you consider a theme that's been newly released. I have been burned more than once or twice by dropping $60 on something appealing only to find out 60 days later that it's a poorly coded piece of s**t. You will have NO mercy from Envato as refunds are basically unheard of. It's not common, but it happens time to time.
Overall Pick
I recommend
Enfold. This may not be the most appealing theme for a shop selling vitamins, but it's clean, user friendly and versatile.
Kriesi has done a fantastic job by making solid improvements all the time.
Enfold Theme
https://themeforest.net/item/enfold-responsive-multipurpose-theme/4519990
Enfold Demo
https://kriesi.at/themes/enfold-overview/
You should also check this filtered thread for "
Best Seller WordPress themes for Ecommerce"
https://themeforest.net/category/wordpress/ecommerce?sort=sales
Whatever you decide on, it's important to support the author and your future income. This means you need to
BUY IT.
Don't be a shmuck and short yourself with something you can't keep current or get support for.
That being said, it's also expensive to buy themes just to try them out.
Luckily for you there are many of them shared here in the main
Download section.
https://www.blackhatworld.com/forums/member-downloads.29/
The majority are shared in a subthread
Templates & Themes.
https://www.blackhatworld.com/forums/templates-themes.111/
Be careful what you download and make sure it's clearly marked as "purchased or retail"
The last thing you want is someone's maliciously coded P.O.S.
@Festinger has a few great threads with a signifigant amount to choose from.
He's very kind to help with this so be sure and give him thanks.
If you are unable to find one you like for testing purposes, you are welcome to post a request here and tag me in it.
https://www.blackhatworld.com/forums/download-requests.39/
If I can help I will certainly do so as well. Good Luck
