To confuse you even more - the Wild Country Solace and Macpac Microlight looks pretty similar too.
Macpac Microlight - £200 (two on ebay at the moment, one used, currently at £75, one new for £150 + £10p+p) - 1.6kg min and 2.05kg total
MSR Hubba - £138.99 - (from The Complete Outdoors) - 1.3kg
Wild Country Solace - £64.95 (from Norwich Camping) - 1.95kg
Coleman Viper - £39.95 (from Norwich Camping) - 2.05kg total
The MSR inner is completely mesh, from half way up the Coleman is mesh. I'm guessing the Wild Country has less mesh.
The Wild Country fly is nylon, the Coleman is polyester. Nylon sags more in the wet but is more durable.
Also, the Coleman's door only opens on one side.
Horses for courses - I couldn't afford over £100 for a 1 man tent.
Maybe I should get on with some work now