Understand, today's products are sold primarily based on which bells/whistles they incorporate to achive some sort of extra value to today's consumers. Also, these products rarely if ever work all the time, in the strictest sense.
FWIW, I've heard horror stories about HAVA and now Vulkano products. Some of the reviews @ Amazon & over at AVS forum seems to support my view a little. Anyway, support is supposed to be like pulliing teeth, and the devices are generally somewhat half-baked (=buggy). I did see one however at a technology demo and it looked like it could potentially do more than slingbox could/can.
Regarding Locationfree (by Sony), I've also heard that it's nowhere near the control you have of TV channels as with a Slingbox, and the product is now somewhat dated. Locationfree I understand is generally used more for controlling TV with another Sony device such as the PSP, and in your home instead of elsewhere. YMMV.
Maybe pop over to AVS forum to see what other more granular level comments you can find on these products.
I have a Slingbox I use to try to watch football when traveling abroad. However, it never seems to work when football games are on. It works fine most of the time -- it will work OK for hours on weekday afternoons -- but then will fail on Monday night. It tells me there's something wrong with my home Internet connection, but the connection is working fine. It seems the problem is really with Slingbox's servers.
What about alternatives to the Slingbox, such as the Vulkano or LocationFree? I don't need any bells and whistles, just something that works all the time.