1oldtimer and all:
I have nothing bad to say about BT-99s. A BT-99 took me to a double A singles average and the 27 yard line. That said, I've shot a low rib since Dec. 1997. 90-Ts are without question, better built guns.
For anyone that isn't familiar, 90-Ts are heavy. Some folks (slight of build, short on stamina or upper body strength, health issues, etc.) can't handle the weight. Other folks simply prefer a lighter gun.
It is absolutely true that 90-Ts have a couple of easily resolved quirks. "C" clips in the trigger (they're actually "E" clips) is one of those quirks.
As for discontinuation...
You may recall the BT-99 was discontinued for a time. Browning's close out coincided with one year's Grand. I don't remember the year but a person could purchase as many as they wished at $795 a copy. More than a few folks hauled them out by the arm load. I'm sure Browning had a reason...
I believe it's fair to say Remington intended the 90-T to complete with higher dollar target guns as opposed to BT-99s.
IMO, the Remington brand name was and remains associated with lower dollar guns like 870s and 1100/1187s. As I recall (subject to correction) low ribs were priced about $2700. Hi ribs were $600 or $700 more. Shooters weren't willing to pony up that kind of money for something that said "Remington" on it. I was one of those people. However, I pounced on a new low rib for $1640 and a new hi rib for $2295 during their close out.
The bottom line? Remington wasn't selling enough units at their chosen price point so 90-Ts were discontinued.
sissy