Jamie - can I just say that your thread really inspired me once I'd stumbled upon the forum back in October/November. Plenty of common sense and focused enthusiasm on your part, and lots of wisdom and guidance from others - I've learned a lot. In particular, I liked the suggestions to focus more on the high and the low end (rather than have lots of bottles that are too expensive to open for no particular reason but not impressive enough for a special occasion/offline) and the caution that one's tastes will inevitably change.
In October I had about 30 miscellaneous bottles, being mainly leftovers from trips to France (notably visits to Cahors and Chablis), gifts from my father and the better end of Ocado. I knew enough to differentiate different wine styles (so I knew what they all were), but knew nothing about drinking windows, which producers are favoured, the styles of different sub-regions, which vintages to avoid - etc. I've since had the confidence to stock up to about 110 bottles in my cellar, 12 in TWS members' reserves, and 12 bought in the current round of Burgundy en primeur.
Unfortunately I don't have enough space to store more single bottles, or for a wine fridge (could probably fit a few whole cases on the floor in the cellar though), so I need to buy mainly mature bottles or wines that can be left in merchants' reserves (TWS seems to be a particularly easy way to do this). This is made harder (although more fun) by the fact that my wife likes drinking wine even more than I do (although not geeking out about it on the internet), so our consumption rate is about 2-3 bottles a week - say 125/year. I don't yet know what the average age of the bottles we drink is, but I suspect it's going to get older as I get more into this, which is going to create a storage issue if I'm to preserve reasonable choice (as wines can only be kept in offsite reserve if they're full cases). As it is, I have some older bottles (e.g. from Blast Vintners, TWS, Seckford) but the racks are mostly taken up with wines that, whilst theoretically within their drinking windows, ought probably to be saved until the early 2020s (per CT, median vintage of my wines is 2014, median drinking window is 2018-23).
Anyway, I've drunk some fantastic stuff already and here's to more enjoyment through 2019.