I'd think really carefully about this, because I believe granite is on the way out as a design choice. It is already starting to look dated in some cases. There are some emerging trends (tinted sealed concrete, solid-backed glass, etc.) that may or may not catch on, so I wouldn't recommend those just yet. It all depends on how far in the future you expect to put the house on the market, and whether you're trying to get a quick sale or just bide your time until the market picks back up. Even so, there will still be a lag effect for some time before the newest trend catches on, so you're probably safe in your style assumptions. The bulk of buyers in the near-term will probably still consider granite counterops as being the epitome of style.
Given your area (Morningside) and what standard features most buyers expect for that price point in that neighborhood, you might want to consider it in order to have a competitive property on offer. Look at the other homes for sale on your street or in your immediate vicinity -- do *they* have granite countertops? If they do, they have an edge over you and will likely sell more quickly than your property would.
If you *do* decide to go ahead with the granite upgrade, something muted and tasteful/classic would be your best bet, and make sure you do rounded edges or the more expensive ogee edge (which costs more but looks very high-end). Also keep in mind that the construction business has slowed dramatically in this down economy, so you should be able to get a very competitive price for the job (even though it doesn't really cost all that much anyway, especially if you go with a basic granite and nothing too fancy).
While you may not recoup your costs entirely, this value in adding this kind of feature is that it will help you sell your house much faster. That is to say, if you spend $5K replacing the counters, you shouldn't expect to be able to tack on an extra $5K to the sales price; but the upgrade may well be the feature that sells somebody on your kitchen (and, by extension, your home). Thus, the real financial payoff is that having this kind of stylistic edge over the competition allows your home to sell more quickly (costing you less in the long run).