Dev its like a mountain bike think of it like tha. You can get a really good bike for around 1000 that will make you happy. Thr only difference in components for shifting is durability and smoothness. Now the difference with mtb is you got a fork and the whole f/s vs. hardtail

I advise you to worry about frame first then the comps, you can always change those. But the frame is the heart of the bike.

Like I said with the felt above, 7005 al vs. 853 steel for lemond