Haven't used the ZTE before but own the Marquee my self. Never had freezing or reboot issues with mine. The Marquee is pretty much the Caddilac of Boost mobile phones right now. If you do upgrade to it you won't regret it.

The dev scene is also picking up so you might end up with better modding options.

 

Have owned mine since early November and haven't had any problems with mine. There used to be a call lockup bug in the old version, but the update fixes that.

If you plan on Modding, make sure you thoroughly read the threads in the root forum. You will have to root/cwm and then install a patched update since at the moment there is no way to root the official OTA update.

 

i have a marquee and my gf has a warp. The warp touch response it way more smooth than the marquee, i think its a good phone.

The only thing i hate about it how it feels. Its so plastic-y and bulky compared to marquee that i just dont want to use it. The screen size is too much for me, i keep my phone in my pocket so i hate bulky. Same reason i dont put a cover on my marquee, i feel it ruins the feel.

But no, i have never had reboot problems on the marquee

 

No but she uses it as a phone only. I use mine to its full potential