Most enjoyable speaker you heard under $800??

Wait for the Elac Debut series speaker from Andrew Jones to come out in September. Probably the best price/performance speaker you'll ever hear. I heard it last weekend at the Newport show and it was amazing. Incredibly detailed while being very musical and satisfying. The bass response was off the charts and this was just the smaller bookshelf. The tower version will go for around $500 I believe.

Pioneer SP-fs52. Paid $220 brand new. These are the Andrew Jones designed little floorstanders. Look pretty average, sound unbelievable for the money. Using them in my kitchen system with some good quality components. Nice punchy bass. I plan to upgrade the tweeter down the track as the treble is the weak point. Sound better than some much more expensive speakers.

JBL L890. I got it when it was discounted to $800/pair (with shipping!)however. There's still a few online dealers that are pricing it that low or just about as low...Amazon, Rakuten, etc.

"I've had 4prs of Maggies, to me 30" is minimum in most rooms." As a general rule, I agree. I have found that placing some of these on the wall behind the Maggies, allows a closer proximity: (http://www.ebay.com/itm/CityBlox-Acoustic-Foam-24-sq-ft-Next-Acoustics-Studio-Soundproofing-/281719194106?pt=LH_DefaultDomain_0&hash=item4197c5c1fa) or (http://www.ebay.com/itm/2-x-12-x-12-inch-Acoustic-Pyramid-Studio-soundproof-Foam-Tile-shipping-discount-/351420139506?pt=LH_DefaultDomain_0&hash=item51d245c7f2) I have mine placed only in the area that the panels will most directly radiate(based on their toe-in).

BTW: Either MMg's or MG12's can be found(MMg- new, MG12- used) within the OP's budget(if no one has mentioned that yet).