For practical IFR training, on a simulator that doesn't go out of
date, I like On Top, from aerotraining.com; it's made by ASA, but sold
by aerotraining.com and they're really helpful.

On Top has nice large, stable instruments and an airports/navaids
editor that lets you keep your geographical database up-to-date. It's
designed for IFR training and practice and it never flakes out like
FS2002 does when doing an ILS approach. It also allows for
instrument/system failures, etc. and has big radios with STBY
frequencies.