By now, you've probably made your choice - and it was probably the Coaguchek XS. Many doctor's offices use them. Even more self-testers use them than doctors do. It's not a bad choice.
I have tested many different meters - CoaguChek XS, InRatio and InRatio 2, ProTime and Protime 3, and Coag-Sense. The ProTime meters do a good job, but are large, more difficult to use than the others, require that their strips (they call the cuvettes) be refrigerated, but tend to be pretty accurate. The CoaguChek XS is the leader in this market. Results are usually within 30% of labs, and supplies probably aren't much of an issue. Plus, your insurance carrier is probably very familiar with them. My experience with the XS shows the results being slightly higher than the lab or the Coag-Sense meter.
For myself, I prefer the Coag-Sense. It's slightly larger than the CoaguChek XS. The test is easy to run, once you've done it once or twice. The results of my testing have typically been near to, or slightly lower than, the lab results. The manufacturer just upgraded the firmware - a free upgrade - last year. Because the results are slightly lower than the lab (sometimes), I feel more comfortable to use it - I feel safer having a meter that tells me that my INR is at or above the low end of my target range than I would be worrying how much lower than the meter my INR ACTUALLY is. Both meters are CLIA waived, both should be around for a long time.