The Mad Monkey (now the Team C Lupuz), and the X2C (now the Team C TC02C) differ, as you say with regards to the MM taking sticks & the x2c saddles.
Comparing the Team C models, the TC02C has the uprated Spur (& i think idler gear), has alloy threaded shocks, adjustable turnbuckles & sealed bearings.
You'll spend more getting a MM (Lupuz) to TC02C spec than the TC02C costs. The MM/Lupuz can be quick for racing but i'd just buy the TC02C to start with.
TC02C here for £89, a mere £34 more than the Lupuz:
http://www.modelsport.co.uk/team-c-t...roducts/369391