how often are you going to run subcards? seems like a very seldom used pattern...
while I havent had my 414s that long, I have used the subcards in every instance...whether its NOS, X/Y(onstage) or even M/S!
they are by far my favorite pattern.
as for TL vs 414...the first thing I noticed is that the 414s dont have quite as noticeable a high-frequency bump that the TLs do.
low end seems a bit smoother as well. also, the 414s weigh about 1/2 that of the TLs!!
the TLs are very good mics and I loved them while I owned them, but the 414s are a much better mic overall, regardless of the subcard pattern.