At the front of the pack when it comes to budget Speedlight’s is a company called Yongnuo.
These are the flashes I shoot with. In the pictures below you’ll see 4 of their most recent and expensive flashes. I have included a video demo of these in action on the next page as well.
These are the YONGNUO YN600EX-RT Master TTL Flash Speedlite for Canon Flashes. They are almost the exact same thing as the Canon 600EX-RT Speedlite Flash. The big difference is the price. You can pick up the YONGNUO YN600EX-RT Master TTL Flash Speedlite for Canon for $127.50 on Amazon right now and you can get free shipping with a prime account. The Canon 600EX-RT costs $499 with free prime shipping. So total cost of 4 Flashes is $510 just barely above the cost of one Canon Flash.
Add to that the on camera controller. The Canon ST-E3-RT Speedlite Transmitter is $264.00 with Amazon Prime. The YONGNUO YN-E3-RT E3-RT E3RT TTL Flash Speedlite Wireless Transmitter for Canon is only $86.96 with prime.
Canon setup grand total $2260.00
Yongnou setup grand total $596.96
GRAND TOTAL SAVINGS= $1663.04
I use them almost every day. Yongnuo speedlites and triggers. Never had any issues with them.