I think it might become more of an issue if your house goes up in flames and you try to claim from insurance if you had been keeping more than 100L. Just something to consider if you are collecting more and insuring it.
I really like it. The light peaty notes are lost to me, I'm getting too used to peat these days. The nose is typical Glenfiddich but sweeter due to the rum finish. The palate lives up to the nose and tends to build nicely as you hold it in your mouth (40% abv). You get a bit of the tropical notes....fortunately no coconut notes though.
I have almost finished my Big Peat Christmas 2017, I think the Big Peat Christmas is a nice release, young Islay seems to be pretty potent and at a cask strength it can be really decent value if you enjoy the style.
It is at least big and peaty as its name suggests whereas say Peat Monster isn't really. I prefer it to Laphroaig 10, and it got me to explore Ardbeg (which I find to be quite prominent in the 2017, but I have two bottles of Ardbeg 10 bottled in the same year (different months) and they taste quite a bit different so there's that...). I agree the putting of Port Ellen on the label is cheezy and I think it's basically unnecessary (ok it probably raises the price they feel they can sell it for).
Given that you can sometimes get Big Peat Christmas editions below R800 it makes it one of the most accessible cask strength whiskies around.
Standard Big Peat could very easily be argued against as it often is more or close in price to age statement Islays. Whether you should get something more expensive is debatable, I think maybe it's worth going for something like Ardbeg Corryvreckan over this, if you can get it for a good price and want a heavy hit of peaty whisky.