True true. Sadly my experience with Tein suspension while working in a Automotive shop that specialised in Suspension & Brakes has left me kinda with a bad opinion of Tein.
They are probably not a bad coilover at all - just my personal experience with them on customers cars has not been mostly positive.
I'm prepared to spend the big money in all honesty. For a lot of reasons.
Probably the main reason is because a full set of original springs is BIG money (mine's sacked out in the back a fair bit, and this causes toe and camber problems when it needs an alignment). And a set of coilovers from MCA is not too much more, and I get new shocks (custom valved), adjustable height (I'd be running the car at basically stock height, with maybe lowering it for a track day if the opportunity arose), and adjustable dampening. Plus MCA's camber washer system is pretty dang neato - basically a permanently locked eccentric front strut bolt (for the camber).