My HPI Micro RS4 Ken Block arrived yesterday. Got it for a good price $139 at Tower.
It's a neat little chassis. I got this as a "toy" to play with in the garage. I couldn't see myself ever racing something like this the way I raced my TRF 417.
The kit is RTR so there's no building, although, it did come with what looks like additional servo horns. The radio is $5 piece of plastic as to be expected. The charger is one of those wall bricks that requires 4 hours to charge. The body is very nice with good detail, although, I prefer to do my own painting.
As this is my first micro car, it's interesting to see how HPI was able to adapt some of the 1/10th design cues into such a small package. Overall, I think this a pretty decent value compared to the toy store crop of RC cars. If HPI has decent parts support and the chassis isn't to fragile, I think this will be a winner for me.
I sold off all my RC equipment almost 1 year ago with no plans to get serious again. Seems, no matter how hard I try, I just can't stay away from RC.

Without getting crazy, I hope to convert the motor to brushless, and upgrade the battery to LiPo. But that's it! Ok, well maybe a charger.