Geosite can be used brilliantly if you have the final format ready as per your need, it can aggregate, clean, compile & summarize data as per your liking & recommendations & can even help in simplifying the summary as per the understanding levels of target audience, however if you do not have a specific format for summaries in mind, it can struggle to make sense of raw data & present it appealingly in a visual format which can be easier to go through rather than just a large set of numbers.
Very suitable for any project where geographic data needs to be analysed or presented in a digestible format. There is more easy to use software for 3D and terrain work. For drilling data the plug in is limited and slightly clumsy in its execution although it is possible to draw the trace, snap to terrain and colour depending on geology, assay results, etc.
MapInfo Pro customer support has always been quick and very helpful with any issues I have had with the software. They usually get back to you about your enquiry within 24 hours and they also tend to follow up to make sure your issue was resolved. I find it refreshing to be able to contact their experts quickly and easily.
QGIS works very well however I find it a little harder to use and find the tools/settings I need in QGIS. It has a lot of the same functionality as MapInfo however QGIS doesn't really offer a dedicated customer support form or service which makes it harder to learn the product.