Sirio TX 18 or you can wait an extra 2-3 weeks and get then new Fantom FR 18 that is coming out and be one of the first on your block to have it. Fantom is claiming equal or better performance than the Sirio.
www.fantomracing.com. The FR 18 isn't on their site yet, but according to Grampi, who has been communicating with one of the employees at Fantom, it should be out in 2-3 weeks.