IMHO you only get true Tele tone (Twang) w/t the brass saddles.
The Brass compensated saddles I believie was devolped by Danny Gatton's Guitar tech to solve the age old problem of intonating
the brass saddles.
Danny Gatton was his own guitar tech. He also used to do work for others in his local area. He bent his saddles by hand to intonate properly. There's a video of him discussing his guitar here (I think it's the last on the list):
I prefer 3 brass vintage style saddles on my Tele. Sounds richer and less rattley than steel, which is a harder material than brass.
Brass sounds less steely than steel.
Eric Johnson, BTW, uses a single brass saddle for just the high E string on his Strat...the other five saddles on his Strat are the usual steel. He uses brass on the high E string to fatten it up and so it doesn't rattle as much...so do I.
you know, after looking at the G &L ASAT Classics lately, it looks like they use 6 brass saddles. I like brass, but my 3 piece Barden bridge doesn't intonate as well as my AS tele.
I have a Cal Tele. A Fender w/ strat tele (b) it has 6 barrels in stead of 3 and it plays and sounds great!!!. How does it compare to a vintage Tele...... It doesn't