This very cheap 18" driver will defenitly surprise you!
I am currently using 2 of these in 2 back loaded hybrid horns i built. (Designed for the RCF LF18G401)
I use a bridged QSC RMX2450 per driver, with a DBX 40-90hz filter.
So each driver gets up to 1500w "rms" (1300wFTC)
I have pushed these to cliplimiter about 5-10 minutes continously alot of times, and sure the driver get really hot and smells, but still does not distort or sound bad in any way i can sense.
I would personally recommend atleast 1000 high quality watts per driver, then with correct filters and enclosure you should not be able to cook this driver.
But still with alot less (200) this driver put out a really good punch.
The drivers does not go as low as my old 18" drivers, but within my boxes sweetspot (45-60hz) these are insane for the price.
The sound quality it produces is good enough for me, very quick and responsive, good for everything above 35hz in my boxes...
I cant recommend any other 18" driver than this if you are on a tight budget and want to build yourself a good couple of subs.