If it doesn't come with a (bathtub) floor, at least get one. And if you are camping in mosquito terrain, well get one with the inner mesh tent (I think Eureka comes with one, and for Nemo you can buy one).
Wild Country Monsoon is a good reasonable budget option (Sports Direct had them on offer, too) - although may not be quite big enough (squash for 4 adults, although they now do a 6 man version) or pack quite small enough (poles sections are fairly long). But stands up to British weather - we've used them with DofE groups in the past, and now for lightweight camping with 2 small kids and 2 adults.
Oh, what I meant to say is the monsoon has decent aluminium poles, which I far prefer to fibreglass ones - I had too many broken fibreglass poles on cheap tents as a student to ever really trust them again! Plus, it benefits from all Terra Nova/Wild Country's design experience. Obviously it's not quite as good as the Terra Nova range, but the price reflects this....
> (In reply to Dave-the-leg)
> Main consideration now is durability. (I know lightweight and durable don't always go together but I can wish...)
The GoLite and from what I've seen BDs MegaMid/-Lite are actually rather durable. The wind profile is not that bad, and by tying guylines from the top you can make it rather stable in quite foul weather.
They are actually rather common on expeditions as cooking or lounge tents as well, as you can easily use them without the inner tent and perhaps dig a nice platform for cooking or build sofas.
Unfortunately the Shangri La 5 2.6kg and Tarptent Hogback 1.85kg need to be imported so another layer of research required re: taxes, VAT etc.but they are incredibly light for the space and at $300 or $400 they seem like just the right thing.
The Laser 5 is incredible too - so much space and height in a 5 kg tent and I saw it on amazon for about £795
From my info trawl the Vango Halo 400 is good as a budget option £160 and 4.9kg
So if anyone is planning a trip to the states soon and can fetch us a tent...
As for VAT, customs and whotnot. A rough guess is aroudn 5-10% customs toll on the tent (multiply the price of the tent by 1.1), then add the P&P (tent pirce * 1.1 + P&P) before adding VAT on top of everything (is it somethign like 25% in UK?) (so (tent*1.1+P&P)*1.25 and perhaps some brokerage fees on top of everything, UPS has been free here in Finland but I seem to recall FedEx wanted around 25 Eur for customs declarations).
> The Quechqua pop-up tents are the most brilliantly designed, well-made and good value tents I've ever come across in 50 years of camping
Packed, they might be a bit unwieldy for bike or canoe use...
For maximum space vs weight, I'd look at a tunnel tent. One with two sleeping compartments; one for you, one for the kids. I guess the other issue is how much 'non-sleeping' space you want. The alternative to such space is a large tarp for day use.