Best Consumer-Based Product / Software for HDTV & Monitor Calibration

Hey Guys -

As mentioned in a previous question, I own two very similar LG LCD monitors which even though one year's model apart, differ in picture settings no matter how many calibration tests I put them through.  I also have 3 other computers plus 4 HDTVs which vary in age and quality.  I want to get each of the calibrated to have the best possible picture - most importantly to have the dual monitors match as closesly as possible.

What would be the best consumer-based Product and/or software to accomplish this?  I say "Consumer-based" as I don't have much of a budget and hardware which costs many hundred & above is out of the question.  

Most solutions that I've found seem to be for a computer monitor or HDTV, but not both.  It seems that the DataColor line of Spyder5 products has really good reviews (here's a list of all of them on NewEgg), but seemingly they only work for a computer.  As the dual monitors are my primary reason, this would be ok, but I don't know if it would be worth it.  I don't care if the technical specs are exact, but would just like to be able to drag a picture from one monitor to the other without it looking different.  My media center computer only has TV for an output so wonder if I could use it on that TV?

I've also seen a few other possibillties - even a THX app for my iPad, but don't know how good any of these tools are or if they'll come close to solving my issue and are even worth it.

So, what do you suggest?  Thanks!