StartupRadar.co is a unique web portal that features a comprehensive list of promising startups worldwide. It doesn't only provide useful insights about emerging companies but also facilitates connections between startup founders, investors, and potential partners. The platform allows users to discover the most promising initiatives in the technology and innovation sphere at a global scale, with a focus on the potential for high return on investment.

1. User Interface/Experience : The interface of StartupRadar.co is user-friendly, intuitive, and simple to navigate. The design incorporates minimalistic elements that make the platform easy to use for all levels of computer users. However, the website can still improve its load speed and visual attractiveness.
2. Features : StartupRadar.co offers unique features like searching for startups by industry, location, and investment size. Other beneficial features include a watchlist tool for users to track interesting startups and a direct messaging system allowing interaction between users.
3. Startup Listing : The amount of data available for each startup is extensive. The listing of over a thousand startups globally is commendable, and the information available about each startup is fairly comprehensive, and yet there's potential for StartupRadar.co to provide more in-depth financial and operational details of these firms.
4. Technology : StartupRadar.co's technological strength is its data aggregation and presentation. Collecting and showcasing startup data on a global scale requires advanced tools and algorithms, which StartupRadar.co seems to possess.
5. Value to Investors : For investors, the platform may prove to be an invaluable tool for discovering potential investment targets. The website also provides updated news about each listed startup, increasing its value proposition to investors.
6. Membership Packages : StartupRadar.co offers free membership that provides a decent set of features, while its paid membership includes additional benefits like advanced filtering and priority support. The premium packages could offer more exclusive features like financial analysis to make the price more justifiable.

In summary, StartupRadar.co is a promising platform for startups and investors alike. With its extensive data and user-centric features, it has the potential to become a central hub for startup discovery and investment. That being said, the platform could benefit from more in-depth data, faster website speeds, and improved customer service to elevate its user experience to the next level.