Great businesses need trustworthy supply sources. But how do you make sure you're getting the best deal on business paraphernalia or office supplies before pressing purchase?

To find out who's the best in the biz, we asked a panel of nine entrepreneurs from the Young Entrepreneur Council (YEC) for their recommendations.

Here are their go-to marketplaces for all things business:

1. Creative Market
As my business mainly involves creating digital content and assets, I've found Creative Market to be my go-to place for any promotional shopping needs. It's where I look first for high-quality site templates, logos, icon sets or business card templates.
- Juha Liikala, Stripped Bare Media

2. Vistaprint
Vistaprint has been great whenever we need to print flyers or inserts. They are quick and affordable and never disappoint.
- Josh Weiss, Bluegala

3. Etsy
It doesn't say much if you're handing out the same promo products as the guy in the booth next to you. Tap into the authentic craft of the folks on Etsy, and I bet you'll have people asking for two of those branded promo items at the next show or conference.
- BJ Cook, Digital Operative Inc

4. Canary Marketing
The promotional products industry is massive. Many players simply list thousands of items and say, "We can customize anything." Canary Marketing is one of few businesses that actually curates cool, innovative products. Promotional items are only worth it if the recipient uses the gift. Canary can help you find fun products that will enhance your brand.
- Aaron Schwartz, Modify Watches

5. Zazzle
Zazzle offers a wide variety of small business promotional items, such as T-shirts, buttons and binders, all at affordable prices. Most orders ship within one business day.
- Andrew Schrage, Money Crashers Personal Finance

6. 4imprint
Check out 4imprint for a wide variety of promotional items for your business. It's easy to use, and I am fond of the hottest products category that gives you insight on new promotional items that your customers will appreciate. The pricing is fair and the shipping is fast.
- Anthony Saladino, Kitchen Cabinet Kings

7. Sportiqe
The universal promotional item everyone loves is a soft, high-quality T-shirt. I don't even bother with the rest of the promotional giveaway items. Sportiqe is the vendor I trust to make a shirt people will actually wear. I've used them for conferences and everyday promotions. Why not have your favorite shirt promote your company?
- Brett Farmiloe, Internet Marketing Company

8. MOO
I'm a big fan of MOO. I get complimented on the quality, design and feel of my MOO business cards constantly. They say first impressions are important, and MOO helps me make a professional and stylish one.
- Laura Pepper Wu, 30 Day Books

9. Local Companies
We try to use local companies and artisans instead of e-commerce companies. We find more value in providing unique products that are not commonly found.
- Evrim Oralkan, Travertine Mart