http://www.ebay.com/itm/TEIN-GSP92-1UAS2-STREET-BASIS-COILOVERS-G37-2WD-370Z-MADE-IN-JAPAN-/131316853747?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3AG37&hash=item1e93182bf3&vxp=mtr
http://www.ebay.com/itm/Tein-Basic-Damper-Coilovers-Coils-Lowering-for-2007-2015-Infiniti-G35-G37-Q60-/400878395848?pt=Motors_Car_Truck_Parts_Accessories&fits=Model%3AG37&hash=item5d5636e1c8&vxp=mtr

are these coilovers a good deal?

 

For the price they're a good buy, don't have adjustable dampers but Tein makes good products. The newest version of those isn't the Basic but the Tein Basis.
TEIN.com: STREET BASIS - PRODUCTS

 

I hear Tein can be really stiff. Like uncomfortably stiff. But that's just what I hear.

 

Everyone's level of tolerance to discomfort is different. My personal opinion / experience is low speed 20mph'ish dampening is a bit to the stiff side but high speed is great. However I don't agree it's uncomfortably stiff.

 

I had Tein on my last car, Acura RSX Type S, and the ride was really harsh. I don't know how they would ride on the G. I have read great things about KW's coilovers.