Lagrange is the best of the Gemini clients right now, if you are looking for a GUI app. It launches in a fraction of a second, which is blissful compared to launching a full-fat web browser, and you get the lean, clean pages that Gemini offers, with no need for extensions and adblockers, javascript or fancy frame-based pages.. Although Lagrange does handle multimedia well, it is focussed on making plain unicode text look beautiful.
I used amfora for quite a while before I found Lagrange and Diohsc. It is a very good client, also probably the easiest to use TUI client for starting out.
Diohsc takes a little getting used to, but once you start using marks and the queue, it becomes very pleasant.
Gemini requires SNI. Major design flaw, IMO. It should be optional. AFAIK there are no gemini sites that support TLS1.3 with ESNI/ECH.^1 That means every hostname gets sent in plaintext over the wire. No exceptions. (Not every site owner is going to do virtual hosting, yet every client request must send SNI anyway. That is dumb.)
Tracking a user's complete browsing history would seem quite easy unless sites add padding to disguise file sizes.
At least with HTTP, most Cloudlfare-hosted sites will support ESNI. Plus there are some other workarounds to avoid SNI on other sites. Better than nothing.
1. Putting an ECH-enabled proxy in front of gemini servers may be one solution. https://defo.ie
