Which better for SSL Lets Encrypt vs Generate CSR

[e.htabar]

Hi
I want to ssl my site
Which I ?
Lets Encrypt
or
Generate CSR

THX

[ScIT]

Let's Encrypt is free, generate an CSR and request an ssl cert costs. But let's encrypt have to be renewed every 3 months (in vestacp this is done by a cronjob).

So in that way +1 for lets encrypt. If you need to get shure, that the website is everytime avaiable without any ssl error, you can request a multiple years cert.