DoodleBug
Senior Member
Both are very capable bikes and at the end of the day it comes down to what you feel comfortable on, test ride both.182cm 95kg responsible adult with no experience whatsoever, Rode a scooter in university but don't think that counts. budget is around 100k
Yes it will feel unsettling or top heavy the first time you ride a large bike especially compared to a scooter but take the bikes up to 60 and 80 and you will see how stable they become.
You mentioned dirt riding and no experience, I would recommend drop or crash bars(Adventure Bikes) or frame sliders/crash bobbins(Road bikes) fitted ASAP. They save money, fairings, engine components and help prevent getting your leg trapped under the bike.
Seriously do it, I've just had the unfortunate event of having to test my frame sliders. It stopped my leg being trapped/crushed, saved what would have been much more damage to the bikes fairings, components and probably frame, I will share pics when I get home.
I would probably go for the BMW there seem to be more available 2nd hand so you can be really picky and negotiate easier. Also BMW hosts rider training and events so you learn how to use the bike to its full capacity.
There are a ton of accessories and upgrade kits for BMW bikes and they seem to have a good support network and community.
I have no experience with the 800GS engine and don't know if there are any known common defects, but as always preventative maintenance is key and by now they should have worked out the bugs.
What I do know is I have a Suzuki 650 with more than 100K on the clock and its never let me down once.