Yes, I know one month is not enough to determine whether a host is really good - but it's certainly enough to see if there are serious problems with it. Well, BlueWho.com caused me no headaches so far - they have been perfect for the past 31 days. A bit more detail:
Price: I signed up for Plan1, 1G/15G @ $20. Once I've moved all my sites here I'll most probably need Plan2, 2G/30G @ $30. So the price is right; not that you can't get cheaper reseller plans, but BlueWho.com allows overselling, so a cheaper host with no overselling might turn out to be more expensive.
Features: in brief, they have everything I need. They offer all the usual stuff other cpanel resellers have; plus they give you 5 IPs. Might be useful when I need them (not right now, but it's nice to have). The main domain is run from the first IP, and additional domains use the second IP - pretty convenient and seems safe.
Reliability/uptime: absolutely no problems here. If there was any downtime, I didn't notice it. All my sites have been functioning as they should.
Support: one word: excellent! All my support questions have been answered very quickly, and what's more important, all my problems have been solved within a very short timeframe. Adrian even repaired a script I installed incorrectly - I don't know how many other hosts will tinker with your scripts. Instead of telling me "sorry, buddy, it's your script, not ours" or pointing me to a help page, he just corrected all the mistakes I made (and I made six

). And then he explained where I went wrong - this is what I call excellent service.
Speed: the fastest loading host I've had so far. That's good enough for me

.
Problems: none so far

. Hey, it looks like I've found a problem-free reseller solution!
All in all, a very nice and smooth one month. I can only recommend BlueWho.com.
I'll be back with another review after three months.
GreatDaneOwner