Most people tend to go for Chargemaster for a cheap solution, Rolec or EO for something that looks a bit nicer, Podpoint for something that connects to the internet so you can monitor your usage on an app, or Zappi if you have solar panels. There are of course others, but they don't tend to be talked about on here and Facebook as much.
There's lots of choice - if you go to the government website you can download a list of all the approved installers and what makes/models they supply. I took this and filtered it down to the ones that did my area (YO8) and I liked the look of their website and then decided on the model I wanted. I didn't like the appearance of the Chargemaster ones, so went for Podpoint. I really couldn't fault their service.
The PHEV can only charge at up to 16A (3.6kW), but it's worth spending a little more and getting a 32A (7.2kW) one fitted as then you're covered for any future electric/plugin hybrid cars you have. Similarly it's more flexible if you go for one with a Type 2 socket (and buy a Type 2 to Type 1 cable) rather than a tethered Type 1 cable, as fewer and fewer cars have Type 1. I leave my cable plugged in (and padlocked) so it's effectively tethered but I've got the option to unplug it and take it with me to use at public charging points if I want to.