One common misconception right now is that maybe SIS 735 is ECS K7S5A.
well im not into the details of things, but basing on what following revisons, it can only get better for sis. Basing it on VIA's own history, revisions that do follow make them better(KT133 to KT133A; KT266A to the current beloved KT266A). So following the rule of it only gets better(there are some exceptions to the rule though....mention something like VIA's current PCI latency woes

). I think(I said that with a big I, OK) SIS can only improve and move forward. The ECS K7S5Ais by far the widely distributed SIS-chipset based offering; though there are others. The company are far from perfect, as exemplified by the number of threads that have sprung bashing them , but like what many people here think, there is a quiet majority here who have liked them; maybe an even bigger number of repeat customers as well.
Now as far as the problems with them have gone, board revisions seem to have minimized the problems, but of course there are problems still. But they can only get better(or so we hope).
Maybe when the higher-tier mobo manufacturers actually offer their mobos based on SIS chipsets, then finally a big, well deserved pay-off for SIS.