My expobar office pulser is a prosumer, e61 (not fully exposed), hx machine. I got it because its basically the same as most other hx, e61 machines, but half the price. (1.7L boiler etc etc)
Ive been playing with a thermocouple, and tightening up my flushing routine - its pretty stable during the shot, which is nice to know! With no flush, it runs at about 98 degrees, with two flushes (til the boiler light turns on, wait til it goes off, flush til it goes on again) and a short wait (dose, distribute, tamp, insert) it runs at 91-92 degrees. If I give it a slightly longer wait, I get about 94-95.
I also looked at Isomacs, but the only one I could afford was a zaffiro - which is a silvia with a sexier body and a bigger boiler, IIRC.