Well, I don't go for expensive nursing tops b/c I've never found that price was worth it IME. The ones I like the best were usually the relatively cheap ones I got at Motherhood. The other thing is that I prefer the two full layers to the kind that have a half top as the top layer, kwim? Also, some of the more costly tops I did try had weird openings, I like the simple vertical slits one on each side as opposed to one opening in the middle or other odd variations out there. I also liked the CO Nursingwear tops that had only one layer, but zippered openings - those were especially nice in summer when I didn't want to wear layers.
I do like nursing tops vs regular tops b/c I like the fact that my belly is covered (esp. in the winter b/c it's cold but even in summer b/c my white, fish-belly, stretch-marked flab is not appealing and I guess that's my last bastian of vanity...keeping it covered! LOL) I found this site: www.coverageclothing.com
and they sell "layering bands" which are like a tube top that doesn't go over your breasts. I'm using these now b/c they stretch down over the belly band on my jeans so I can wear regular tops for maternity but I plan on using them post-pg as nursingwear under regular tees w/a good nursing bra. Right now - they are on sale for $6.50/each so you can't beat that!
As for bras, I just bought a Bravado, it's alright, but obviously I'm not using it to nurse right now. Again, I've been just as happy with the nursing bras I've found at Kohls or Motherhood as any more expensive brand I've tried. That one you showed was an underwire and that is one type of bra (no matter the brand) that I wouldn't recommend - don't get an underwire for nursing - I'm pretty sure it's been linked to bf difficulties (like a propensity to mastitis, etc).
As for camis, you said you're a "bit large on top" - I don't know exactly what that means, but I'm a size XL 14/16 normally and though I wear a 38C I've never been fitted so I wouldn't be surprised to find out I was actually a 40DD (or more even). That info given, I have tried the glamourmom, Target and Motherhood nursing tanks/camis. My complaint about all of them is that there is absolutely NO coverage by the time you get the girls into even the biggest size so I would never wear the tanks alone - I'm too modest to have that kind of clevage going on in public. They do work relatively well under another shirt, though they are all too short lengthwise IME, they ride up from the bottom and I don't like that, that's why I think I'll like the layering band better b/c they will stay tucked in or pulled down over my jeans.
IMO Glamourmoms run WAY small so even an XL is skin-tight on me. Motherhood and Target are about the same, though I always liked the straps on the Motherhood better, Target's were more spaghetti straps and Motherhood's more like a tank as I think of it. And since I ended up wearing them under another shirt, I liked my maternity tank from Motherhood just as much b/c it stretched down further and I could just pull a nursing boob out from the top of the tank-bra part to nurse.
The best site to search online for all kinds of nursing tops is:http://www.kjsl.com/~beanmom/nursing.html