Onion sets - Year 2

Onion sets and bulbs, in the first year, can produce large bulbs despite flowering. My Autumn ones last year that flowered kept quite well and just had a dried stem in the middle. The spring ones from seed that flowered still produced sizable bulbs but were unlikely to keep very well as the stems in the middle kept quite wet and would have rotted quickly if not used. Some year old large bulbs I planted specifically for seeds, used up all the bulb in the second year producing the seeds. Some others I'd tried last year to unsuccessfully get seeds off that flowered, 2 of the 3 died but the other formed some small bulbs that could have been regrown but I didn't bother.
Should be interesting to know how your onions get on.