Flying HEL-LHR in J end of December on BA tix and metal and the lounge options seem like slim pickings. Which do I choose?

almost@home, using the travel class to gain entry
BA's lounge according to the OW website - Looks to me like my dad's living room, doesn't really have the business class glamour I was hoping for.

Finnair Lounge non-Schengen, using OW Sapphire status to gain entry
I've been here before and liked it, but I hear it's currently under renovation and they're doing microwave food on plastic cutlery in the meantime.

Aspire Lounge, using Amex Gold/Lounge Club to gain entry
Looks nicer than almost@home, but I'm concerned I might have to pay for a guest for my non-status fellow passenger in J. Also looks like a bit of a hike from the lounge at the transfer desk to gate 2437G where a bus will drive halfway to London.

Judging by the OW website, ideally I'd want the Finnair Schengen lounge, but I read on Finnair's website it's not available for non-Schengen departures.

What are your recommendations?