Arma the BMW X Country is a fun bike in the right place, mile munching on big roads is not the right place. When touring with your Tiger the X Country will go way further off tarmac up tiny tracks and tricky terrain reaching remote mountain tops with ease.
I am 5ft 3ins. I have a 2007 X Country which was greatly lowered by a previous owner. I have done about 17,000 miles mostly touring in continental Europe on mine.
Wind resistance is awful on motorways in headwinds (I don't go there on this bike). Very twisty tiny roads are a delight with the added ability to get well off the beaten track. I have done a few hundred miles off tarmac and never dropped it despite some interesting places. The power to weight ratio is impressive. When I get back on it after a fly ride trip aboard a heavier bike it feels like a 250 dirt bike. Very different from the other single cylinder BMW's. When I get back on it after a sportier ride it feels terribly sluggish.
Seat is less comfortable than most BMW's.
Luggage carrying is not great. I use a top box plus tail pack with added anchor points for the bungees, plus lightweight bits (map or tablet) elastic strapped & tied to "not the fuel tank"
Fuel tank capacity about 130 miles. I carry a plastic siphon tube taped to the underside of the seat. The fuel tank is low so a siphon might work. Fuel warning light packed up on mine and the costly replacement of sensor unit was soon done after I ran out of fuel.
Before I bought mine I rode an original X Country for an hour or so on tiny roads on a Greek Island. It was great fun but pretty tall for me, I would not have been capable of stopping on steeply sloping ground.
My X Country has probably been my least reliable bike, with poor, slow service from my local BMW dealership. I think they put their least able mechanics on the simple bikes and after several disappointments will not be using them again. Problems include upper chain guide falling off (known model issue subject to a later recall) and low battery (but still functioning) causing failure of engine management system. Having said this the build quality is good, but when something goes wrong it is a pain to work on with access to everything awkward. The 53 horsepower 650cc engine is Austrian Rotax, not German or Chinese. Antilock brake can be switched off.
My advice is buy one, go off and have some wonderful adventures together then sell it before it becomes too troublesome.
Perhaps you would like mine!

HA! Well, there's a vote of confidence!
Electra's review is kind of all over the map. I wonder how much actual work Electra has done on the bike?

53 HP? Really? On what Dyno was that? True rear wheel HP is typically measured at around 42 to 45 HP at best on several tests I've read.

It's well known that the Rotax engine was designed by ... Austrian ROTAX of course. Early on Rotax supplied motors for BMW and other companies like Aprilia. Rotax also designed the F800 twin for BMW, ALL 800's are built in Berlin, NOT Austria.

Early F650's were built in Berlin at the Spandau factory. Sometime in early 2000's BMW transferred F650 production to Loncin in China. The Rotax design is unchanged and BMW's machine tools are in China. Engines and bikes have been built there ever since.

BMW and Loncin have had a successful partnership for over a decade. Basic engines are very good but like many Euro designs (KTM) the owner needs to be more proactive regards maintenance and best do some service work himself if possible. Learn the bike, know it's foibles and deal with them before they cause problems. These bikes ARE a bit awkward to work on, simple things not so easy to access. Not very home mechanic friendly, IMO.

You are probably aware that the UK dealerships have clearly defined areas, in many cases corresponding to the boundaries of the counties.
Independant servicing mechanics have established themselves in fairly recent years; often these are time-served BMW technicians who were fully trained back in the days when such apprenticeships were organised properly - they saw a business opportunity and formed their own business.

Right enough, garages nowadays will put the "car valeting trainee" onto the task of servicing your bike and charge you the same hourly labour rate as a fully trained mechanic.

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Dave