All I can say is that my Cree CXB3590 COB LED based modules have been outperforming my expectations since I got them.
1. They run cool
2. Plants say; Best. Light. Indoors. Ever.
3. Quality is better
4. Easier to grow under
5. Efficiency is icing on the cake
If you're doing 20-25 sq ft, I'd suggest a Johnson Grow Lights Maximizer.
Tasty LED makes great modular style COB LED fixtures.
Northern Grow Lights is another top quality builder.
Pacific Light Concepts is also on this list, as are Timber and several others.
All these options use top bin chips, have a well deserved reputation for quality and advertise right here on RIU, cuz they're made BY us, FOR us.