1. Siser EasyWeed: This is a popular choice among crafters and small business owners due to its easy application and great results. It has a strong adhesive and is available in a wide range of colors.

2. Cricut SportFlex Iron-On: This HTV is perfect for activewear and athletic clothing. It is durable, stretchable, and can withstand high temperatures.

3. Oracal 651: This is a permanent vinyl that is great for outdoor and high-use items. It is water-resistant and can withstand extreme temperatures.

4. ThermoFlex Plus: This is a versatile HTV that can be used on a wide range of fabrics, including cotton, polyester, and nylon. It has a soft feel and can be layered for multi-color designs.

5. eBoot Heat Transfer Vinyl:This HTV is a great budget option. It has a wide range of colors and compatible with most fabrics.

It is always recommended to test the HTV on a small area of the fabric first, before applying to the entire shirt to see the results and to confirm if the vinyl is suitable for the fabric and the purpose.

Detail at Best Heat Transfer Vinyl for T-Shirts