Alright, I tested both the 60681 and the 22081 PRLs. I tested them in this order. Put the 60681 PRL on my phone, gave it 10 minutes to utilize itself (by finding the towers, making a good connection etc) Tested 60681 four times using speed test inside Open Signal app, then a small 10 minute break to give the phone to find and utilize the 22081 PRL, then 22081 four times. Keep in mind that although I ran both tests with the same signal strength (4 bars out of 6 total, 51% signal strength according to Open Signal, or -93dBm) Here's my results:
68081
Test 1: ping - 382ms, download - 1318kbps, upload - 422kbps
Test 2: ping - 352ms, download - 1426kbps, upload - 290kbps
Test 3: ping - 295ms, download - 1646kbps, upload - 0kbps
Test 4: ping - 229ms, download - 1561kbps, upload - 431kbps
Average: ping - 314.5ms, download - 1487.75kbps, upload - 381kbps
22081
Test 1: ping - 301ms, download - 1166kbps, upload - 723kbps
Test 2: ping - 233ms, download - 1211kbps, upload - 409kbps
Test 3: ping - 393ms, download - 723kbps, upload - 295kbps
Test 4: ping - 531ms, download - 1636kbps, upload - 536kbps
Average: ping - 364.5ms, download - 1184kbps, upload - 490.75kbps
Keep in mind that different areas might have different speeds simply because maybe Sprint has updated one area but not another. However I have found certain PRLs have better uploads, and certain PRLs have better downloads.
This was just for educational purposes so you can see the difference between the two and make your own judgement call.
