I mostly wear long sleeved running tops for commuting - a bit cheaper than "proper" cycling jerseys but otherwise very similar, and I don't mind the lack of a good back pocket when commuting.
For long rides at the weekend, where I want the back pocket to carry tubes/goodies etc I've got a long sleeved Muddyfox jersey, which seems fine to me, if a bit more basic than a snazzier jersey. If you're just looking for a cheap and cheerful long-sleeved cycling jersey, pop down to Sports Direct and get one of these!
When it gets chillier I've got a zip-up soft jacket - not water-proof but plenty warm. Haven't really found a waterproof yet where the boil-in-the-bag is worth the rain proofing...