Amazingly, I have both those.
However I very rarely use the Pippa and regret buying. Mostly because of the fussy 'gold' metalwork which is a bit bling, verging on naff for my personal tastes. If you're planning on getting one with 'silver' metalwork though I guess that won't apply so much.
I have the smaller Pippa and find it heavy, which I don't like, but OK though not great size wise - certainly less capacious than, eg, the Boden one. Also find the cross body strap a bit thin and weedy in look and feel compared to the 'statement' grab handles, though you may not be planning to use it.
Lastly, I personally think the Pippa has been around so long now and is so recognisable and often seen that it's a bit boring.
As for the Boden, to tell the truth I haven't really started using this yet (have it on navy) but have tried it out and it's great in practical terms - lots of room, pockets etc. The metalwork is brass. So not bling like my Pippa but not super classy. But then I'd say the whole bag is more unstructured and casual, which suits me and my lifestyle, but might not you, depending how you mainly want to use it.