Phonak Sphere Infinio Ultra vs Rexton Reach R-Li T80 at Costco

The Phonak Sphere Infinio Ultra is a premium behind-the-ear prescription hearing aid priced at $4,898. In HearAdvisor's lab testing, it earned an A grade with a SoundScore of 4.9/5, placing it in the top 5% of the 39 prescription hearing aids tested and ranking #3 in the category. This device demonstrates exceptional speech performance in our testing. Speech in noise scored 4.5/5—an excellent result that measures 2.40 points above the category average of 2.11/5. Speech in quiet also performed strongly at 4.3/5, which is 0.92 points above the category average. These results suggest the Sphere Infinio Ultra may particularly benefit users who frequently navigate challenging listening environments like restaurants or group conversations. Music streaming delivered a solid 3.3/5, measuring 0.54 points above category average. Own-voice comfort scored 2.8/5, which is above the category average by 0.10 points but remains mixed in absolute terms. Feedback handling measured 4.2/5—strong in absolute terms, though 0.52 points below the category average of 4.72/5. The Sphere Infinio Ultra is best suited for users seeking top-tier speech clarity who prioritize performance in noisy environments and are prepared to invest at the premium price tier. Those seeking similar sound quality at a lower price point may also consider the Phonak Sphere Infinio, which scored 4.98/5 in our testing.

The Rexton Reach R-Li T80, available at Costco for $1,500, is a behind-the-ear prescription hearing aid that earned an A grade with a SoundScore of 4.6/5 in our lab testing. This places it in the top 28% of the 39 prescription hearing aids we've tested and earned it our 2024 Expert's Choice Award. In our testing, this device demonstrated solid speech clarity performance. Speech in quiet scored 3.9/5, which is 0.46 points above the category average. Speech in noise measured 2.5/5—above the category average by 0.39 points, though still mixed in absolute terms. Own-voice comfort was a particular strength at 3.6/5, scoring 0.90 points above the category average, which may appeal to users sensitive to how their own voice sounds while wearing hearing aids. Feedback handling proved excellent at 4.8/5, just above the category average of 4.72/5. Music streaming scored 2.7/5, which is 0.06 points below the category average—a minor gap but worth noting for users who frequently stream audio content. The Reach R-Li T80 features rechargeable batteries and supports both iPhone and Android streaming with hands-free capability. At its price point, it outperforms same-priced competitors like the Jabra Enhance Pro 20 at Costco (4.01/5) and the Orka Two (4.00/5). This device is well-suited for users seeking strong overall sound performance with excellent feedback stability and above-average speech clarity through the Costco channel.