I'm sure we've all got our preferences for particular lines. The ones I've mentioned are the ones I use for most of the type of fishing I like, which tends to involve light gear and catches of small to medium fish. For the types of fishing I do less often, such as fishing for barbel, chub or carp, I'd favour different lines. I don't mind using different lines for different jobs, just as I don't mind using different model hooks, or even rods and reels.. I'm fussier over the make of light lines than I am over heavy ones – but heavy for me would be 5lb and over.
For light waggler fishing I've found 1.5 to 2.5 Maxima the best. As has been said, low memory, well-behaved, slick long-lasting surface, robust, and stretchy – useful quality for a light reel line. Some stretch in the mainline lets you get away with lighter hooklengths.
For an all-round light leger/ light feeder reel line, 3 or 4lb Maxima. Suits everything from feedering for bream and tench to fishing for chub on little rivers and brooks. Has proved reliable, indeed, often seems indestructible.
For light, general stick float fishing, I've been using 3lb Drennan Supplex. Has a “lighter” feel than Maxima, floats well with a bit of a spray, knots well and has proved surprisingly strong. I've persevered despite some initial reservations: it can curl and coil a bit and seems to have a more fragile surface ie it shows wear relatively quickly, doesn't like having shot moved around on it, and if it ever tangles the kinks etc won't drop out. If it were female, you might say higher maintenance than its equivalent Maxima.
For rig line and hooklengths on pole gear, I like Silstar Match Team, which seems to have a great balance between lowish diameter, lowish stretch and hardwearing strength.
For running line, where the fish are not cushioned by a long length of elastic, I'm not keen on pre-stretched lines, and I'm still using what I was using when rods where made of fibreglass – stretchy Kamasan/Bayer Perlon, most often in 1.7lb, but with 2.1 and 2.6 at times.
I've tried a few modern hooklength lines, but none have lived up to their hype, and I still lament the passing of Sundridge Green Force and Racine Tortue in lighter strains.