I use full frame and I shoot everything as a hobbyist -- people, travel, events, etc.
I recently sold my medium and wide zooms (17-40, 28-75) because I rarely used them anymore and I favor my two primes most of the time. I'm down to 50mm f/1.4, 100mm f/2.8 Macro, and 70-200mm f/4L.
I want primes and I want to be able to go wider than 50mm. I think 24/50/100 could be a nice prime lineup if I'm basing it around the lenses I currently own. However the 24mm f/2.8 isn't that fast for a prime, and I can't justify the 24L since I don't anticipate using that focal length enough to warrant the expenditure.
After looking around a bit, the Canon 28mm f/1.8 or Sigma 24mm f/1.8 seem like appealing options since they are both relatively fast for under $500. But are there other options I should be considering? What else have I missed?
Should I consider simply trading 50mm f/1.4 for a 35L, rather than complementing it with a 24 or 28? Would the gap between 35 and 100 be too great?
Surely someone will suggest 35/85/135, but truth be told I would prefer to avoid a "sell everything and start over" approach. 
Thanks in advance for your input!


