Matt, I forgot to mention in my first post that every sander Festool makes will be recommended. That's because we all have different first experiences, other tools and sanders, and differing uses. You will really need to sort out the recommendations based on comparing your needs with the advice given in this thread. Have fun ???
Also remember you have 30 days to see if it does the job for you.
You mentioned possibly getting two. One combo you are thinking about is the RO90 and ETS125. If you going that route , I suggest the RO90 is better paired with an ETS150 for your furniture needs. That gives you small and large instead of small and medium. Throw in the RO90s versatility (delta pad) and you will be able to pretty much everything easily. Since you would only need the RO90 for the beds, you could get that one first and spread the spending over a bit of time.
Seth