Update:
Still flying with the Sensa. I have found that there is a performance option under battery, which you can set for balanced or high performance. Once I set it to high performance, it became much snappier for loading things, which was my main gripe. Obviously battery life decreases, but I can always switch back to balanced mode if I plan to stay out longer.
Overall, this phone is far better than Wunderphone 1 when it comes to value. If you see one for $20-30, pick it up ASAP. There's not a single phone I've seen that comes even close to the value or bang-for-the-buck.