Which transformers do you recommend running with TIU?

Paul,

   There is a reason I invested in 3,  Z4K Transformers, with the Remote Commander Side Receivers, along with the DCS TIU you have all the running options, for all the different engines including conventional.  Add the Legacy 990 Base with the Cab2 and you cover the full spectrum of both Lionel & MTH, including the operation of FasTrack Command Control switches.  

Hope this helps a might.

PCRR/Dave

 The trick is to pick up the Z4K Transformers when somebody is willing to sell them at more than reasonable prices, I acquired 2 of mine in this manner.  It's not just the power the Transformers provide, it's all the different running options that come with that power, that IMO make Bricks a waste of money, unless some one gives you the Brick for free.

If you want to go a less expensive route, and you plan on running your conventional engines using only the DCS remote, buy Lionel PowerHouse 180(s).  These are pure sign wave power supplies; they have no throttle.  Use one to four depending on your power needs.  I personally would buy two PH180s, one for the two fixed channels and one for the two variable channels.  These would wire direct to the TIU (wire to one channel, jump to the other); either cut off the end plug or buy the adapter.  Will run any engine with no issues and they have a very fast CB.

Downside: may be hard to find until the new ones start to show up.

CAPPilot posted:

Downside: may be hard to find until the new ones start to show up.

I just bought two PH 180's from forum sponsor Eastside Trains.  Good price and showed up in less than a week.  Not sure how many they have in stock.  Mine were stamped with the 2014 production rev date.  A lot of other sites were out of stock but taking back orders.

George

I have no conventional or PS1 items (one PS2 and the rest PS3 & Legacy), but I am also a big fan of the PH-180s. I don't think there is a better value out there for powering your trains.