My setup:
FS-700 (non-Festool)
FS2-1000 (made from 1400, off-cut used for a "joined" 3000)
FS2-1400 holy
FS2-3000 (2600 from 2700 + 400 permanently connected so can be stored vertically in a 26x cm flats should the need arise)
missing:
2nd 1400 holy for full-height LR32 stuff
considering:
- cut the FS2-1000 further to about 750mm so it can replace my "handy" non-festool one
- get dedicated 1600 for full-sheet cross-cuts (so the saw will have good guide on a 1250mm /4' cross-cut)
That said, my purchasing sequence was REALLY stupid - got first 1400 with TSC, then 3000, then holy and was left still wanting more holes ..
Starting again, I would get (in this order):
- 1400 holy
- LR32 basic set + router bits (3,5,8 mm) /customize it for a cheap router until get a OF1010/
- 1400 holy + 1st set TSO self-aligning connectors + back for 1400 rails (to fit and protect all)
- 800 + 2nd set TSO self-aligning connectors
That gives:
800 handy for small stuff
=> fully-guided cut up to 400mm (16"), max cut ca 600mm
1400 for "common" x-cuts
=> cut up to 1000mm (40")
2200 (1400+800) for "big" x-cuts
=> cut up to 1800mm (70")
2800 (2x1400) for "common" ripping
=> cut up to 2400mm (95"), max cut ca 2600mm
3600 (2x1400+800) for "big board" ripping for floor-to-ceiling pieces
=> cut up to 3200mm (125"), max cut ca 3400mm
Rest is a convenience, not a need. I would in any case avoid 1080/1400 non-holy/1900/2400 sizes in preference of the second holy and a handy 800.
Having above, would go for a 3000 for totally-straight rip cuts and a convenience dedicated 1600 for full cross-cuts. Anything beyond you are probably a pro and know what you need anyway ...