I've never played with any of their handhelds, but I've got an Alinco DR-605 dual bander, and TWO DX-70T HF radios.
The DR-605 has been rock solid. Even though there are some operational features I'm not wild about, it's always just worked, even though it's taken a beating. This is the radio I used for contest liaison when roving in in UHF and microwave contests. That's a ROUGH life for a radio.
The two HF rigs are both mobile - one in the personal car, one in the "company" car. Both are heavily used, both just work. They're simple to operate mobile, and have been reliable. The control heads leave a LOT to be desired, so far as "feel" is concerned, however. They're cheaply built, and feel flimsy. They ARE flimsy, so they get treated gently, and they're holding up ok.
So, in the end, Alinco radios are ok. They're cheaper than others, but you're getting a fair deal for your money.