Hmmmm..............although the XTL requires quite sme tweaking(have 1 myself), i still say it's easier to use than say the BOSS GT-8 and definitely the Digitech GNX series, which are total ripoffs IMHO. I can't say much abt the Vox ToneLab LE, nvr tried it b4. And the XTL is more versatile(to me) than the GT-8, it's main competitor bcos 1. the price 2. the quality of the amp/cab sims 3. the quality of the effects is near to that of the GT-8 4. more user-friendly.
U might wanna consider the upcoming X3 Live, it doesn't have just more amps/cabs/effects, it allows u 2 plug a bass and guitar in seperately, has Mic/S-PDIF inputs for home recording junkies, XLR outputs and more. Oh yes and an effects loop for those pedal junkies out there. I jus called CityMusic, it shld be $752 after discount.
DISCLAIMER: This was the price quoted to me, an anonymous caller. By no way is this the 'official' price of the PodX3 Live.