There's a huge range in the adventure spectrum, and you really need to decide how you want to use the bike before you can decide which one. Getting something/anything that will not lose too much money on changeover, while you work out what you want, is a good idea. Doesn't necessarily have to be cheap, just saleable for close to what you paid.
You can get quite analytical; make a list of the must haves, the must nots, and see where the bikes fall.
Or you can follow your heart not your head, and buy the one you lay awake at night dreaming about. Riding is about enjoyment. It's no good buying the one the soulless accountant recommends if you aren't enjoying it and wish you were on something else.
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