Ive had a few now, standard Xe like this one, one on throttle bodies, turbo one, and another standard XE one
all hilarious fun, but the turbo one is defintely the pick of the bunch, the midrnage speed (ie 3rd and 4th gears) is better than a stage 3 cossie from even a moderately tuned "evo 5" chipped nova.
My current one is mid engined though, so a little better off the line to say the least!
As for handling, if you get the suspension right, they handle well, but never brilliantly like you can make a 205 with the correct setup.
But they certainly dont have to handle badly.
Put it this way, johnnybravo off here is quicker round the ring in his with only 150bhp than any of the cossie lads ive seen there so far except rainbird, and its not cause he is quicker on the straights than a stage 3 saph, cause with only 150bhp he wont be anywhere near, so its blatantly the fact its getting through the corners far quicker than the cossies that is doing it!