Hafler preamps - good, not so good, and history?

I have had a Hafler preamp, amps (DH... & DH...), and I loved the sound, but would never buy a Hafler preamp now.
After a short period (1 year and on), every Hafler preamp in my circle of friends ( 3 or 4 of us) developed noisy, damn near explosive switching.
If you forgot to turn the volume down when engaging the various switches, you would be reminded in a noisy, kaboom, pick your adjective kind of way.
In my somewhat limited opinion, they had good sound, but lousy switches, pots, etc.

I guess I should also add that I owned the Adcom 565, and it had none of the issues I talked about regarding the Hafler preamps. I recently sold the 565 and at 14 years old, still had no switch or other noise.

Does anyone else have any thoughts on Hafler preamps? I keep trying to acquire a DH-110 at a reasonable price but keep striking out. The Hafler Iris has caught my eye though but am curious what other members think about it. I love Hafler amps though. I currently have a rebuilt Hafler DH-220 and it sounds great. I had a DH 500 and a pair of XL280s and they sounded good as well. My favorite though is still the DH-220.

I consider the Hafler 101 one of the best ever phono preamps, and I have owned (and own now) some pretty pricey stuff. Of course, the price wh*res will disagree.
At the time my 101 was in use (it was new) I was working for someone in the audio industry, and we would get sample amps and stuff from manufacturers to play with. One night I was left to finish up and really cranked the in house system, including a turntable, the 101, a Quicksilver 190 and some speakers we were trying to sell, placed in a "rule of thirds" setup. I spent hours marveling at the imaging and picking minutiae out of Jazz at the Pawnshop, Cantate Domino, Peter Gabriel, Pink Floyd, Isao Tomita, The Police, et al. One of the best nights in my entire audio career (I am 61).
Better have any one you get these days recapped and cleaned up....
Have Fun!