I've dabbled with several 1X builds, but my current one is Gauss (CASEd, with 4 tons), 3 MPL, 13 DHS, 275 Standard engine, AMS (1 ton), Endo Steel, and 416 armor (a bit shaved off each leg). It's fast enough to be a decent cavalry mech, with a bit of long range punch and plenty of up close defenses. All the MPL are in the arms, so it works nicely against enemy lights who get too friendly.
I've also tried LL and PPC boat builds, plus an AC20/ML setup, but I'm sticking with the Gauss/MPL build for now.
If you can't afford DHS for now, then play a half dozen matches in a profitable mech and get 1.5 million cbills. Endo is maybe three or four matches (600k or thereabouts). A relatively easy afternoon or evening of matches.
If you really want to start using the 1X immediately, then perhaps try a Gauss (low heat high tonnage) with standard mediums in the arms and plenty of extra heat sinks (maybe a smaller engine to free up tonnage for more HS).
Edited by Levi Porphyrogenitus, 26 February 2013 - 10:06 PM.