When it comes to building fast websites connected to Odoo, each of the options you mentioned has its own pros and cons. Here's an overview of each option:

A: shopinvader/odoo-shopinvader (open source, OCA)

• Pros:
  • Open source and community-driven.
  • Integration with Odoo is seamless.
  • Allows for customization and extension.
• Cons:
  • Development and maintenance may rely on community support.
  • Limited features compared to commercial solutions.
  • Requires technical expertise for setup and customization.

B: vuestorefront/odoo (open source)

• Pros:
  • Open source and community-driven.
  • Provides a headless PWA storefront.
  • High performance and scalability.
• Cons:
  • Complex setup and configuration.
  • Requires separate development and integration effort.
  • Limited out-of-the-box functionality.

C: Steersman.works (not open source)

• Pros:
  • Offers a complete solution for Odoo-based e-commerce.
  • Optimized for performance and speed.
  • Provides additional features and services.
• Cons:
  • Not open source, so customization and control are limited.
  • Requires a subscription or licensing.
  • Costs associated with ongoing support and maintenance.

D: Heliconia.io (not open source)

• Pros:
  • Offers a complete solution for Odoo-based e-commerce.
  • Provides performance optimization and scalability.
  • Additional features and services available.
• Cons:
  • Not open source, limiting customization options.
  • Requires a subscription or licensing.
  • Costs associated with ongoing support and maintenance.

Choosing the best solution depends on your specific requirements, budget, and level of customization needed. If you have the technical expertise and prefer open source solutions, options A and B could be suitable. On the other hand, if you prioritize convenience and additional features, options C and D may be worth considering, despite being closed source.

It's important to evaluate the features, support, performance, scalability, and cost implications of each solution to determine which one aligns best with your needs and priorities. Additionally, conducting a thorough evaluation, including performance testing and considering user reviews, can help you make an informed decision.