The 2CGauss, 2ERPPC Wildcat(yes, MekTek effectively invented a sort-of Clan answer to the Black Knight) is considered one of the best general jump snipers, though I personally don't necessarily like having all the ballistic slots in the CT, and the heat cap is a little low for a cutting-edge Clan 'Mech(should you wish to focus a little more on energy weapons to avoid being too ballistic-centric). Still, it has a fairly skinny vertical torso, so it can be tricky to consistently hit while it's jumping.
MekTek is also working on MP4, which is going to be a fairly significant update for Mercs(you can look on YouTube for a whole lot of promotional videos on the new features, like C3, new sensors(like seismic), a few new armor types, and the ability to put different kinds of armor on different sections), that was actually going to be released a lot earlier, but Smith & Tinker and co. surprised MekTek by naming them to be the distributors for the MW4 Free Release, and long-story-short, that set things back a bit.