Can you give an idea of
number of posts on your boards?
Number of visitors on site at one time (according to either XF or google real-time)?
This will make it easier to suggest the type of server.
@MattW moved us to a Knownhost VPS (3GB RAM) and we had over 350K page views one month without even hitting 2% as far as server load (on the total server which the VPS sits on). In general, unless your page views are in the millions per month you may not need dedicated.
I've only ever used @The Dark Wizard's VelocityIO and have had a great time with them. They also just got some new servers built and are ready for live use I hear, so that's always awesome news. I'd definitely recommend VIO to you. The service is fast and the communication is excellent.
Strongly disagree. We have had communities with over 1,000 online and millions of post move to our Premium xenForo shared hosting from dedicated servers and been told several times their site out performs their old dedicated server hands down and only at a fraction of a cost. All of these said clients have been on board with us over a year or longer too, nor have we ever had a large community cancel to return to a VPS or dedicated server. Not all shared hosting is alike...
OP never asked for a VPS either.. After them messaging me direct, her needs are very far from requiring a dedicated server, she simply requires a better host..
There's a difference between saying "I'm happy with them, here's a link to them" and
"I'm happy with them, here's a link to them and if you use it I get a benefit from it", which is basically what an affiliate link is. The rule was to make sure that the person being referred knew that the referring person had a pecuniary interest in them joining/becoming a customer by that link.