i got a single opinion that it would make sense to go with p2pool over solo mining. just looking for a deeper pool of opinion.
It would definitely be better to go p2pool over solo mining. With 200 GH/s, you probably don't need to worry too much about variance. That being said, even with 350 GH/s, Eligius (my pool) still has pretty wide swings of variance, so it won't be variance-free either. If low variance is important to you, definitely give Eligius a try at least; using our SMPPS reward system, it evens out the variance by saving extra earnings from the high swings to cover the low swings. As a result, you basically get a nearly-perfectly predictable income. Even if you don't care about variance, Eligius (optionally) offers the same decentralization as p2pool with the getmemorypool protocol (which I have also written a proxy for).