Underpowering subs and relying on the subs to withstand abuse catches up with you. Would you put a 2.5K amp on a Zv5 sundown at 2 ohms?
Either feed them clean power or expect to clip a bit when searching for that little bit extra. 5yrs?.. they sound very durable to me.
Pride subs are nasty 5 inch voice coils they just cost too much as far as sq speakers I'm not sure haven't seen any but I've been in 2 different builds with their 15s and both hit hard.