i have a juwel vision 250 and we bought a tetratec EX1200 and all i can say is .........
IT'S AMAZINGLY GOOD, BEST THING I'VE BOUGHT
AND I WOULD HONESTLY RECOMMEND THEM.
when doing a change of the water and cleaning the gravel it takes around 30 mins
for the water to become crystal clear again, and no i'm NOT exaggerating.
i bought mine from a local aquatic specialist for a not unreasonable £79.99
which is imho a very decent price as there is obviously no delivery charge to be added,
and on top of that if anything goes wrong, i just drive the 10 minutes to his shop
instead of having to send things off, and wait weeks on end for a reply or the return of
the item.