For fruity, berry type accords I like ethyl butyrate, as David has already suggested, but I think ethyl methyl 2 butyrate and isopropyl methyl 2 butyrate are very useful for the bright, sharp part of the scent. You might also consider Ionone beta as an alternative or addition to dihydro ionone beta: I think it's fruitier and less woody.
A good cheat is to use some Cassis Base - that way you get the benefit of some of those more difficult sulphur and other trace chemicals without having to keep them in stock.
I agree raspberry ketone is worth getting: smells like raspberry jam. Though personally I'm hyperosmic to it and can't smell it at all until it's in such high dilution that most people can barely detect it, which makes blending with it a bit more challenging. Consider strawberry furanone too, for that sort of effect.
Depending on the direction you want to go Nectarate or Fructalate can also be handy and although both are quite new to the market, neither is especially expensive.
Fruity notes are highly sought after at the moment, so well worth exploring: good topic!