Just got a TP2 from Sprint

[truckinusa]

I got this phone thinking it would be an upgrade from my HTC Diamond. I don't really like some aspects of it. It seems laggy and slow at times stock out of the box. Well anyways I didn't post this thread to dog on the new phone. I'm stuck with it.

I'm wondering what kinds of tweaks I should consider? I was trying to figure out how to open up SIM card slot, but it seems fairly complicated. I also want to know if it is worth it to upgrade to one of the ROMs for 6.5? I am a very basic user. I mainly use it for web surfing using Internet Explorer(hate opera) and email.