The Contra is a great kite I owned the 14M and it was good in light wind with good range, but in my opinion there are several very good comparable LEIs out there now. I also still own a Switchblade which also has decent low end but turns better.
I now have the Speed 2 19M silverarrow edition. To me It's way more than a just a kite it's my wind insurance policy guaranteed to ride and jump never leave home without it. I ride mostly in the ocean and weigh 175lb I hold the SA19 down to 18knots no problem. Living in Miami I use this kite 70% of the time. It depowers much better (more linear less on off) then my other bows. The smooth power and hangtime of this kite is addicting and I'm sometimes dissapointed when I can't ride it. I like the fact that I can use a smaller TT most of the time. Plus not pumping a 20M and laying out the lines means you get on the water fast. The SA19 relaunches easily even in stupid light winds where you would not want to drop a 20M tube. I'm sure the Waroo 20M is a great kite that will get you cruising and you can't beat it for the money, but if you really want to jump big and get lot's of hangtime then I would spend the money for the Speed2.
Some downsides of the kite: It's expensive turns relatively slow and it takes getting used to. I didn't absolutely love it the first few sessions. I was impressed with the power but setup self landing and jumping took some adjustment. Now I find it as easy as any bow. The bar setup is just OK, the chicken loop sucks and doesn't spin but you can easily change it (the new bar is supposed to be better) You do have to tune the kite every so often to maintain optimum performance but at least you can compensate for fabric and line stretch. Packing the kite takes some time you want to be careful with the bridles so that you can setup quickly the next time. The kite requires some periodic maintenance but it's pretty easy to fix even on the beach with just some spare line and tape. I don't see any issues with the silverarrow fabric it seems pretty durable to me and for light winds it makes a significant difference because the kite just floats in the air in bad lulls.
See attached windgraph this was one of my best SA19 sessions of the year.
Good luck.