The choice between visiting Safebooru and Rule34 (R34) ultimately depends on what you're looking for. Safebooru is focused on safe, SFW (safe for work) content and has stricter moderation, making it a more appropriate choice if you want to avoid explicit material. On the other hand, Rule34 is known for its adult content and may not be suitable for all audiences.
Consider what type of content you're interested in and your personal preferences regarding moderation and safety. Always prioritize your online safety and content appropriateness!