I use a close to 2 year old Canon Mg5270 with CISS @ 11k. Prior to this I had a a HP AIO @ 6k, HP Print Only @8k and another Canon AIO @ 5k. Family has a Brother AIO with CISS which i feel is the most VFM @ 10k. All in all, reliability of the Canon's has been highest. CISS makes it easy to run, as the costs come down a lot. A CISS Kit will cost you similar to a set of new cartridges, but usually last 6-7 times as much. Canon usually ignores CISS for warranty, as long as you have one set of original cartridges to show. HP will void your warranty on CISS use. Brother - see this ->
http://www.ebay.in/itm/Filled-CISS-...lies&hash=item27d23f8cfe&_uhb=1#ht_1766wt_906 direct plugin to the printer, no messy replacements, or tubes and tanks. Also remember if you refill or CISS, to ensure you use good quality ink, else, you will damage your printer in a most expensive manner.
If you need Wifi, your budget better be 10k plus. The cheaper ones are cheaper, but will cost more in cartridges over a period of 2 years (usual life of such units). The expensive ones will have seperated tanks, and available CISS kits, so costs come down, and at the same time they have higher life. Ignore fancy features such as screen etc., they are a novelty and you will not look at them after a few days.