I am very happy with my Selespeed...and yes it is a MANUAL, cogs, clutch and all. And no matter how good you "think" you are, you won't do a better up change or especially downchange(toe heal in non sele) than the Selespeed. Key word is everytime! Also like someone said not taking hands off wheel to change is why Ferrari F1 introduced paddles and add needing to look down at tacho when approaching redline...Selespeed will auto change up to prevent over rev or cutout.
Should we go through all the manual H pattern gearboxes that have had problems? Or how much sooner their clutches wore out because changes are not precise every single time.
Try both in various road conditions...I was convinced on a mountain road!Good luck
PS Like any technology buy a well looked after/serviced car and you will have less hassles...buy cheap from a silly boy racer and you will suffer.