I haven't got a clue about the peach jogger I'm afraid, but can comment on the strawberry and peach (regular)!
PEACH: The peach is lovely, quite big and bulky with bigger wheels than the strawberry so could be better if you're planning off road walks etc. Unfortunately you cannot fold with the seat unit attached like you can with the strawberry, and I wasn't keen on the folding mechanism (found it a bit clumsy and fiddly) though I'm sure that's something you would get used to with time. The peach is MUCH heavier than the strawberry, so bare this in mind if you are going to be doing a lot of lifting in and out of cars. Even the carry cot itself is significantly heavier than that of the strawberry. The original feature of the peach is that you are able to turn it into the "peach blossom twin" at a later date if/when you have another child, by simply adding another seat unit or carrycot. My problem with this, is that when two seat units / carry cots are used together it does look rather cramped. There is next to no room available for the child underneath, and they would be left staring up at the back of the seat unit above (not a great view!). Not a bad idea if you have two tiny babies to fit in together, but not very suitable for bigger babies/toddlers in my opinion.
STRAWBERRY: The strawberry is very pleasing on the eye, not too chunky, but yet still has the sturdiness of the peach. It folds easily with the seat unit on which is an absolute godsend, and very easy to do, literally takes 5 seconds. Because of the way it folds, it is quite wide when collapsed, therefore might not fit in the boot of a smaller car like a mini for example. Pushes like an absolute treat, very smooth and sturdy. As mentioned above, the carrycot is MUCH lighter than that of the peach (worth bearing in mind that you have to add the weight of the carrycot PLUS the weight of baby inside it) so much easier to carry about when needed. I can't say I noticed any difference in size between the actual size of the seat unit and carry cot compared to the peach, just made in a slightly different style. I also prefer the colour options with the strawberry, but that is down to personal taste.
We didn't really fancy the idea of a three wheeler which is why we didn't pay much attention to the peach jogger, though we did give it a little push and if anything I would probably say that the three wheel system makes it slightly less sturdy, and does give it a tendency to rock from side to side (especially if you were going round tight corners for example). The fours wheelers offer more stability and control in my opinion.
Hope this helps!
