I'm struggling with 1TB (in stock at local Apple Store) or 2TB BTO (supposed to be delivered 11.22-11.30, but hasn't changed to preparing for shipment yet nor has card been charged). I currently have a 2015 MBP with 1TB and I only have 32GB free, which is why I've been leaning towards 2TB.
Also, secondary issue is if I do get the 1TB model in stock, what monitor should I use with it, I have been waiting for the 5k LG.
My existing 2015 MBP setup is connected to 27" Apple LED Display and 24" Apple Cinema Display, which I don't believe are compatible with the new MBP.
The more I think about it, the easier decision it seems to just wait another week or two for the actual computer I want instead of settling for 1TB less, which would also solve the problem of waiting for monitors since in 2-4 weeks we'll be able to order the LG 5k...Sigh