We need a wallet that doesn't HOG resources.... I'm running the new 0.10.6.3 on Linux and it's eating 2.1 GB of memory. 2.1 GB! That's just nuts! I hope the devs address this soon. No wallet using that much memory will ever become mainstream.
I asked Max about the memory usage a few days ago - unfortunately for now he believes that this is due to the large blockchain at about 5 million blocks. Apparently newer bitcoin core code improves memory handling so upgrading to a newer code base would help this - won't happen immediately though as it's a big job and the focus is currently getting masternodes up and running.