alpine type r questions

ok, the question... what do you guys think of these? i had a ton of stuff i was going to put in my car... but i sold it all, sooo now i'm trying to figure out what i want to do, and i am getting an alpine deck, so i was thinkin of just running everything alpine.. but as for the subs, i have never heard the new r's, you guys think they are any good as far as sq and spl? are they better suited for sq? or spl? and are they worth what they cost? any other subs you think i should go for in the same price range, i'm getting out of wanting just spl, i'm not really that into it anymore, i'm thinkin i'm going to switch over to bi amp system for the front / rear stage and run some good subs in the back, not just loud shhh.... i'm also thinkin about maybe getting 4 good subs and running those, so i can tune them down to sound good, and still have it be loud... what do you guys think?

i have a grand prix 2 door btw, think 4 12's are a bit much for it?

i'm also thinkin about DD 3512's instead, but i'm sore about their rep being shhhty to me last time, HAHA, i know that's a bad reason to not use their product, but whatever

i don't know why i can't deside, haha

How much space do you have to work with? Running 4 Type R's in an undersized box won't do you any good in an SPL oriented setup. As far as the SQ goes, i've heard they're respectable, however a sealed box does not mean better SQ and you'll find that a properly tuned ported box can sound better than certain subs do sealed (the Type R being one of them). This is of course assuming you're not looking for a perfectly flat response, which many people wouldn't appreciate at all.

also, i've been messin with winisd, and i'm thinkin the DD 3512 MIGHT just be a better sub over all, with similar box size and port size, i just can't get the r's to match up with the dd's, the dd has a lower cut out freq at the same db gain, that would make it a much beter sq sub correct? it seems that these type r's need a box that's just WWAAAAY bigger than the digital designs do, but i'm not sure if i have the 05 specs on the alpine anyways

DD's are great SPL subs, but the Type R should walk all over it in the SQ department.  With that being said you really can't follow winisd all that closely. I say go with 1 or 2 Type R's. 3.5 cu ft per sub tuned to 35-40 hz would be excellent for what you're looking to do. There's nothin scarier then putting up big numbers with a single sub setup, especially when the sub can be had for $150.