Hmm Arslan Senki and Ore Monogatari are also good choices, I think.
As for sugar the more the merrier afaiac.
Hmm ... as for other series ... I can't think of any other ones I am enjoying that you might also like.
Although ... this may be a long shot. There is a short series (2 minute eps) based on a manga called Wakako-zake. It's about an mid 20's single office lady who is a food connoisseur. Not a lot happens but I think it is kinda endearing and it makes me smile. Have you seen any eps or are you familiar with the manga? If no you might give it a try. I think 4 eps have already aired.
I can just hear you muttering "Why am I watching this? Nothing happens!" ... but well, who knows. Maybe it will click for you? ^^