Do you already have the HP LP2475w monitor? If so, never mind... But just saying, there's the new-ish Dell U2410 that came out late last year, its colour calibration is much better than the old Dell's and the HP - using an IPS screen. But having said that, the HP - if bought from HP itself - can get an extended warranty quite cheaply. If Colour calibration isn't that important, you may be better off with a much cheaper monitor, since both the HP and the Dell are expensive in comparison.
With regard to OCZ, i'm in two minds. For one, they make a lot of great equipment at quite low prices, the problem is, a lot of their products like to die within or shortly after warranty. Their power supplies have been known to blow unexpectedly with only minimal to moderate use, i for one had this problem with a 500 watt stealth or something - PSU, was only used about 10 hours a week and after 1 year, it died. Their memory comes in batches, some good, some bad, with numerous DOA's and short delay RMA's, but in their defence, it may be a case of scale, OCZ sell a lot of their kits, so of course, the rate of return on defects will be higher, even though as a percentage, it's probably the same as others (but still just a guess). As for their SSD's, i don't know, not much is said with regard to long term use. I would advise that you spend the extra $20-$30 on an SSD just for an extended warranty of a minimum of 3 years preferably 5, since the manufacturer has more confidence in their device and is less likely to break - even if it does, you'll be covered.
As for a case, it depends if size is a factor (and price). Larger cases, like full towers, will provide that extra room for air to flow without cables getting in the way, but they are big and heavy and of course, expensive. I have 3 Thermaltake cases, bought over the years, Xaser III, Kandolf and a Xaser VI. The Xaser VI is big, imposing and rather intimidating to be honest. If you get the windowless version the side panel has large mesh panels, so they allow for a much improved air flow while still providing a glimpse inside the case. Thermaltake fans on the other hand, namely the 'free' ones that come with the cases, leave a lot to be desired, since they're cheap sleeve bearings and you'll be lucky if they last 5 months. Lian Li tend to make more sleek cases, but they are mainly Mid Tower cases (they still offer some full towers). Again, it comes down to requirements, environment and budget. If it's a work computer, then you'll probably want something a little more innocuous. If it's personal use, then it's all a matter of taste.
