Chris, reading between the lines of your post, seems like you prefer barrel-cockers, and the lightness/handling thing is a big deal, so I'll concentrate on those.
There are three classic families of guns from the heyday of break-barrel springer target guns: the Diana 60 series, Walther LG series, and Weihrauch HW 55.
The Dianas have the advantage of being truly recoilless, using the Giss double-piston system. They are internally complex but the quality and performance of these guns is fantastic. IMHO they are rather underrated by collectors, the quality of the checkering and wood finish in particular can put the Walthers and HW's to shame. My personal favorite is the model 60, which is a bit smaller and lighter than the later models 65 and 66. It has an easily removable barrel sleeve, thus works either as a target rifle or lighter plinker.
Here are two examples of the model 60, first with the standard stock, the other a model 60 Tyrolean:
I won't say too much about the Walthers as so many outrageously GORGEOUS ones have already appeared in this string (Gaines...Tom...Garvin...have mercy)! The quality and performance of these guns is awesome, their biggest claim to fame being the incredible level of metal polishing and rich blueing. Great trigger, great sights, they have it all. My personal favorite of the family is the LGV Olympia, and I wholeheartedly back Tom Strayhorn's comment about the stock--to me the all-round best-handling stock I've ever picked up. Again, like the Diana the LGV usually has a barrel sleeve, it is very heavy but removes easily, and the lighter sleeve from the earlier Walther 55 fits also. It truly works well as either a ten-meter gun or for more casual shooting:
But I freely admit to huge personal prejudice in favor of the HW 55. I don't know what it is, just something about it that has some real personality and clicks for me. I love the handling, I love the feel of the nifty barrel latch, I love the Rekord trigger, I love the feel of shooting it. They are easy to work on and plenty of parts are around. Gaines is right about them being longer than the Walthers, though. To me it's just the king of all-rounders. If I could own only one springer rifle this would be the one, but picking which stock would be pretty tough! Here are several variations:
HW 55 MM, Bavarian-style stock. Great all-round design, really pretty to my eye. Late ones like this example have a fore end accessory rail:
HWB Champ, the junior HW 55 version. This has a REALLY small stock--uncomfortable for most adult hands. Also has shorter barrel with sleeve and a positionable trigger blade, which are kinda neat though:
HW 55 Tyrolean, to my eye the most elegantly-proportioned Tyro on any of the old target guns. Also a rather shorter "pull" (distance from trigger to butt) than the other full-size HW 55 versions.
HW 55 CM "Custom Match," FWB-like target stock, but much lighter and nimbler than you might think from its appearance. This is the rifle I shoot the most, period:
HW 55 S, plain beech "Sport" stock. Slim, trim, more rounded edges and tougher wood, it's a great choice for all-round shooting, especially outdoors: