I have a 990 Legacy set and a 993 expansion set. Never had a problem with either of the Cab 2 handhelds. I think they are great. My 990 base is an early set so I sent it back to have the charging circuit repaired. It was done and I have had no other issues. I recommend the Cab 2 for Legacy operations. If the Cab 2 seems to be having problems try replacing the batteries with non rechargeables and see if that works. When using replacement rechargeable batteries they should be at least 2400mah rating.
As I commented above the iCab app is good as well and at $50 it is a bargain. I have it on 3 iPhones. As long as all the phones are signed in with the same iTunes account the one purchase can be put on multiple devices.
