I have an e10 and when i upgraded some parts with metal HPI replacement bits (alloy centershaft, alloy suspention tower bars and the ballbearings) i found that the screws could be of slightly better quality so i'd advise you to get a PROPPER screwdriver with the correct size (i didnt do either of these;P) but other then that its a cool car if let down slightly in the options and trinkets devision so if monumental tuning/hopup options are your thing the tt-01 might be better for you. That said i like my e10 alot and am eagerly awaiting its next bash with some mates...