We’ve the BA Copper Spur UL2. We got it after comparing with the MSR Hubba Bubba and Freelite mainly due to the extra headroom – I’m 1.8m tall and when I sit up in the MSRs my head touches the ceiling. Unless it’s come down in price then it’s a little over your budget isn’t it?
Only had a few nights in it so far. Not found the mesh inner to be a problem but it is a little cooler than a solid inner, I wouldn’t want to be using it in a snow storm though, definitely a three season tent. The material feels gossamer thin but for the volume then I suppose there’s no other way to get the weight down. We got the groundsheet protector as well – doesn’t add much weight or bulk to the pack and means we can split the tent fairly evenly weight wise.
Used in “blowy” but not stormy conditions so don’t know how it will stand up to a Hebridean breeze.
The advice about sizing up from the expected number of occupants is a good one, the UL3 is only 350g heavier than the UL2 for example. But there’s a decent amount of room in the UL2.
There’s also a “bikepacking” version of the UL2, basically it uses shorter sections for the poles so it packs better and can fit between the drops on drop bars.
Have a look at Ultralightoutdoorgear – https://www.ultralightoutdoorgear.co.uk/equipment-c3/tents-shelters-c25/two-person-tents-c26 for more options.