Ultimately I think what it comes down to is whether you might want over 50 identifier-less aliases.
If you dont need more than 50 identifier-less aliases + unlimited normal aliases & unlimited custom domain aliases, the Anonaddy Light plan is a much better value, but if you may want more than 50 identifier-less aliases, than SimpleLogin is a bit more cost efficient.
For the people using a custom domain (e.g. spotify@customdomain.tld) or using standard aliases (e.g. spotify@username.anonaddy.com) for the majority of their accounts, 50 identifier-less aliases (e.g. afhji4hf@anonaddy.com) might be more than sufficient, but for those that would heavily use the identifier-less addresses an unlimited plan is the better option.
can get 1 year SL for 26€ (Euros) which should be about 26$ (??).
The dollar is a bit weaker than the euro right now, 26€ is a bit over $29