I don't agree with having RMIs and HSIs. I did my initial in a clapped out old PA30, with 1 ndb fixed card and 1 ils/vor. No gps no dme. That aeroplane and instructor taught me a huge amount about flying and when it came time to getting a HSI and RMI it was fantastic, and a breeze to use as I thought a dme was a flash bit of gear!!.
I have heard some guys doing their stuff on twins with all the bells and whistles and then struggling for a bit when they have DG's and fixed cards.
j3