we've had Pizza Cucina in their new incarnation and found the pizzas to be brilliant and the service really good. I also like the points you earn to get discounts off future orders. I think I only had Cucina a couple of times before so maybe their pizzas were better, but all in all, still the best pizza delivery around SE1.
Pizza Lupa updated their menu a few months ago. I do miss some of the old pizzas but the new Funghi di Bosco is magnificent. Although sometimes it does take time for them to deliver they recently won an industry award as best independent pizza delivery chain, which I think is well deserved.
I find Lupo a step down from Cucina, to the extent that I've almost completely stopped ordering from them (which basically means no delivery pizza - unless anyone can tell me of someone else who does proper pizzas.)
I too feel some of the magic has been lost. No more cherry tomatoes for starters! Feels like some of the ingredients have been changed to save a few extra pence. Pizzas are still good but there's been a lot more average ones that great ones recently, which you never got with Cucina. I was actually really really passionate about Cucina. I'm not really with Lupa. Plus they've introduced a totally awful holding music on the phone that has all the crap about 'we're obsessed with customer satisfaction' which is always a sign that things are heading in the wrong direction to me. And the new logo is not as good! But still the best on offer in SE1 I reckon..
Bit of a depressing step down on the few occassions I've tried them since the changeover. Stingy topping portions, pizzas seemed smaller and normally over-cooked.
I do feel a debt of loyalty, though, after getting texted a one-night-only offer which I promptly took advantage of. The pizzas ended up taking over an hour, but the manager was very pleasant about it and refunded the price of one of them.
I'll probably give them another chance soon, but am definitely mourning Cucina - head and shoulders above anything else I'd found.
In the lottery that is delivery pizza, I am a big fan of these guys. I personally haven't noticed any changes from them other than the name.
Incidentally I've long been searching for good Thai delivery and had some from Sphinx last night ... despite the unholy combination of "Thai and Egyptian" cuisine they offer I was very pleasantly surprised byt their pad thai, green chicken curry etc. Thumbs up.