Ask yourself questions like how much are you willing to spend. If your budget is low, you'd better choose a TPE sex doll. If your budget is higher than $2000, you can consider buying a Silicone sex doll. Figure out what your personal preferences are. If you prefer a more lifelike face, or prefer a hot bath with a sex doll, then the Silicone doll is your best choice. However, if you like soft breasts and want to try a variety of sexual positions, buy a TPE love doll.
All in all, each material has its worshipers and it is not really possible to objectively determine whether one or the other is better. Just make a choice according to your budget and preferences. Whatever material you choose, make sure you buy the sex doll from well-known and reliable vendors. Before addressing any sex doll brand, try to understand its reputation and guarantee policies.
Once you know what sex dolls you are looking for, ask the vendor/supplier for additional questions immediately. They will be more than happy to help you with your choice of a sex doll!