Biscuits I love love love my pacapod (you're right it is the Portland) so I'm gutted to not be able to give you more positive answers. However, if I'm honest the bag is pretty heavy even when it's empty. I think that's because it's made of sturdy materials, even when I jam extra stuff into it I'm not worried about it breaking, it feels well made. It's not SUPER heavy, but it's definitely not light. It hasn't bothered me at all though, because it has nifty little clips which make it really convenient to hang from the pram, and if I'm using it without the pram I carry it with the strap across my body.
I couldn't find it for significantly below RRP ANYWHERE, and I looked for MONTHS. I created a MN thread asking about discounts, and I kept an eye on multiple websites the whole time I was stuck at home. In the end I managed to get 10% off by buying it from a website which offered 10% off your first order. I never came across a pacapod-specific offer though. Sorry! If it's any consolation I genuinely think my bag was worth the £110 price tag now (this is coming from a person with a £30 handbag) and I've had so many positive comments from other Mums when I pop out the little pods.
The final q, about the parent pocket, again I'm afraid it is pretty narrow. I've been able to squish my massive purse in there, but it helps that my purse is very narrow. There's nothing wider than my little umbrella in the parent section. I have crammed my umbrella, wallet, two packs of tissues, lip balm, travel cards, staff pass, pens, keys and assorted junk in there! Although it's a narrow pocket it is the full width of the bag, so I've still managed to get a lot in there. I love that it has little pockets within the parent pocket, so I can always find my keys, lip balm, travel card etc by going straight to the correct mini-pocket.
I've found the pod system genuinely useful. Not sure the bag would cope well for two DC though, especially if one of them is older (more food, bigger change of clothes, etc).
Has that been of any use? I'm sorry to waffle so much, I just know that I was dying for extra info before spending all that money on mine, so I hope I've fully answered your q's. I know my answers seem negative, but I've really found the bag super helpful. Particularly when dealing with an explosive poo on the tube! Or when I needed my bottles of ebm to last an entire day of being out from 7.30am to half midnight (the feeder pod is a cool bag). Plus it's shiny and pretty without being childish or overly feminine 
Must stop talking now! Apologies for the mammoth text. Thanks for the sleep encouragement everyone. Dream your point about having her sleep in her own room in a few weeks is a tempting one! I really think if she couldn't smell my milk she might wake less. I'm a bit paranoid about the SIDS thing though, despite the fact that their advice seems to change every couple of years! By 2013 they'll probably be advising parents it's safer to have your baby in a SEPARATE room for the first 6 months! However as a clueless newbie with a crippling case of PFB I'm too scared to go against the official advice. Another few weeks of sleep deprivation may change that though!