You may find this thread interesting. I've built up a bunch of these.
http://www.dakkadakka.com/dakkaforum/posts/list/355685.page
I like them alot, though it must be said that the walkers are too large for sentinels and the figures are too large for
IG. However, the whole line is golden for orc players or those who want to build 28mm battlemechs.
The Varan is too small to be a proper
IG vehicle, but with a few conversions, you can make an excellent manticore missle deck (see the second page of the thread above for more pics and info) so that your Bassilisks can serve double duty (assuming you didn't glue the bassilisk deck in place already).
The condor is too small to be a valkyrie (no troop space). Still, there's no reason it couldn't be proxied for a vendetta, even if it is small in size.