I've been really happy with a combination of LME and DME without having to put expenditure into hops (Brewferm Pre-hopped LME Kit plus Muntuns light DME and Muntuns wheat DME made me a phenomenal beer in 1 week - could drink it straight from the fermenters drum tap :P).
There has always been something odd about Coopers LME that i've used (the same oddness in a Dark Ale, Draught/Pale Ale, and Stout), with Sugar or Brew enhancer or DME the problem persisted.
As i said though, only DME and I'd have to spend more already and spend a minimum of £5 on hops, and there wouldn't be much variety. I find it difficult to store and the risk of losing a large batch puts me off using anything but the small bags, and there are so few varieties and only one brand to choose from at my LHBS.
LME and DME for me!