i Just got a new 1.8s Special edition sentra and it is amazing. The sound system is much more than anyone expected. It picks up pretty well (i suggest the 5-speed manual). It saves a ton of gas when driven normally. Best of all, it was the best possible deal since the civic and the corolla were more expensive, yet had less power, worse design, and less than half of the options.
Sound System, the appearance, the reliability
offer some performance parts which do not void the warranty. Make a bigger variety of NISMO parts for the sentra.