I have a revelation country explorer 2015, I see looking at the spec, the revolution cross 2 2016 and explorer 1 2016 look very similar.
I have found my bike ideal comfortable easy to cycle rolls smoothly, unlike my previous pinnacle that needed cogs constantly replaced twice in a year both derailleur also and ate chains brake caliper snapped off on train. With my revolution I have need no parts apart from bottom bracket and got the rear wheel rebuilt after 2 spokes snapped. As someone else mention and seen other mention on other blogs the wheels are possibly not the best pinged a lot before rebuilt.
I find the mechanical disc brakes good, I would not worry about cost if brakes break as parts on line for low amounts mine have not broken but wondered about the potential cost so checked .
I find the disc brakes better as need few little adjustment you can get pads online for 2 pound. Mine has the older avid bb5 which seen to be harder to find parts for in shops but can get online in 2 days.
As far as I can see the revolution cross and explorer 1 look to be almost the same bike same groups set bit different ratios same parts apart from tyre size. With the explorer you get mud guard and rack with cross disc brakes, mud guards and rack can be fitted but disc brakes cannot so may be disc best. I am no expert so may be not the same bike you could ask in store.
As far as bike station is concerned to be me it seems good but bikes are not that cheap great for parts and odd bits. I wanted a galaxy was going to pay 300 for an old one but was something wrong with it they said or ended up being withdrawn or something. In bike station depends what is in your size and type of bike condition a lot of variables that mean if you want something good to use a lot would take a little luck. As the cross is currently on discount don’t think you would get that much more bike for money in the station even if happened to be in size as a dalesman or a galaxy even 20 year old be over 300 if good order more.
I bought my revolution used from internet. The dawes galaxy Al can normally be had for 450 on line new with rack and mud guards, but no disc brake and group set more budget( I think).
I would also agree mudguards vital but as bike can fit them even if sold with none no big deal