The last few times I've tried I've had to move away as I'm UK based, found the site had issues, had really slow response times (back then) which meant it was a very frustrating experience to say the least, and because the site is monetised I couldn't risk staying on the hosting any longer so went to self hosted.
What I'm looking for is a smooth migration to a new host, uptime is fine I can see that - but if my site has an issue currently an engineer is on it within 15/30 minutes and it gets sorted, plus I get backups etc offsite - all on SSD infrastructure that's really fast.
I don't want to risk moving if it's going to be a nightmare migrating, or I lose files/images in the move, or if the response/repair time if there's downtime is a nightmare like previous times where I've had to leave my site down overnight till the support staff come on shift in the US etc?
Also - ping time, response time for users in the UK and also SEO implications of moving away from UK hosts?