First and foremost: Make sure you plan for the future, this is a BIG investment.
One important feature I find, is a mixer with full metering on all channels. With a variety of people expected to run the board, this helps a lot. You'll also have to decide whether you want to have mic cables run from the mixer to the stage, or whether you want to have a stage box and an ethernet cable run to the booth. (I would assume you have the former and keeping things that way might be easier, but it might be a good selling point, because you have fewer losses and less chance of getting interference using an Ethernet feed.)
I believe you will find that the Roland system is probably the most mature when it comes to HOW systems. (Has the most integrated options)
On the Presonus, it appears that the output to the firewire 800 card is pre-fader only. Note: Firewire 800 - your computer will have to be compatible to make full use of the mixer feed. There has been a lot of discussion about good and bad firewire interfaces.
The Roland system can either record to their dedicated recorder, or through their REAC system up to 40 channels. Hard to tell whether they are pre or post fader only, or either. The schematic seems to elude to it, but their manual is mute on the subject.
Don't know about the X32.
The Soundrcraft products, will let you do either pre or post fader through a MADI card. (Note: It doesn't look like the MADI card is an option on all digital products, though) You would also have to start with the more expensive Si series to get full metering. The "expression" series does not have this.
Beyond that, is having a remote wifi connection to control the board through an iPad (or similar) important. How many gates, compressors, and reverb effects do you want available?
If you need to hire a consultant - DO NOT hire one who also sells equipment. You'll almost always end up with what they have to offer and not necessarily what you really need. Again, this is a BIG long term investment, don't take it lightly and don't let board members talk you into something they'll regret later. Churches have a long rich history of doing sound over and over and almost never getting it right.
Good Luck,
Bruce