We used them when dd was insisting on a nappy for poos, and they were OK for that, but they felt rougher than the more expensive ones, and I don't know how comfortable they would have been for wearing longer than that. Although at that price it might be worth getting a pack just to try them and see how you find them.
There's still a packet of nappies sitting here with your name on it, btw ...
No but the ones in the purple coloured packet are quite good. About £6 for a large pack (amount in pack depends on size of nappy used.)
I use them as night time nappies for dst, 3 1/2 before they were fully toilet trained though I used mainly pampers because I signed up on their website and got loads of vouchers sent over a period of two 1/2 years (for usually £2 off per pack.) Worth doing that if you need to save money.
Dont know about tescos, but i use boots brand cheapies at £1.82 a pack and they are great! they even fit my huge 2 year old. They are better than pampers in my estimation. They dont have cloth like fasteners and look cheap but boy do they hold pee.