Had a spare e50 and I wanted to build a no-drama daily so I got this head and the TCCD kit. I absolutely love it. Starts on a single kick which is great because the estoril blocks full pedal motion. Temps in the low 300s and relatively quiet ride. Anyone that complains about low end probably needs to tune their clutch.
Build: unstuffed crank, 15mm bing (still jetting), estoril pipe, and a 2-shoe clutch with 90g shoes and 15lb pull on stock springs.