Both silicone and TPE (thermoplastic elastomer) are common materials used in the manufacturing of cheap sex dolls, each with its own set of characteristics and considerations. Here's a comparison between the two:

Silicone:
- Silicone is generally firmer compared to TPE.
- It is non-porous, which means it is less likely to absorb liquids and is easier to clean.
- Silicone dolls tend to be more durable and resistant to tearing or damage.
- Silicone dolls may feel more realistic to some users due to their firmer texture.
- They are less sensitive to heat compared to TPE.

TPE (Thermoplastic Elastomer):
- TPE is softer and more flexible compared to silicone, providing a more lifelike feel.
- It is porous, which means it can absorb liquids and may require more careful cleaning to prevent odors or staining.
- TPE sex dolls may have a more "realistic" skin texture and feel due to their softer nature.
- They are generally more affordable compared to silicone dolls.
- TPE dolls can be more sensitive to heat and may deform if exposed to high temperatures.

Ultimately, the choice between silicone and TPE comes down to personal preference and priorities. If durability, ease of cleaning, and heat resistance are important factors for you, silicone may be the better option. On the other hand, if you prioritize a softer, more flexible feel and affordability, TPE may be the preferred choice.