Yes, I am a Lee dies fan too. I own more expensive dies from other brands, but I do not see better performance over my Lee dies, and I no longer see the advantage of bushing dies for the neck, which I will explain below:
Collet die:
For neck sizing, the Lee Collet die requires no lube of the case, no tedious clean-up of lube, and is so fast and easy. I use two strokes of the press, turning the case slightly for the second press. To finish the sizing I always use an additional step with an expander die mandrel (Sinclair or 21st Century) to the precise neck diameter ("tension") desired.
In other words, even when I use other brand's more expensive bushing dies and fiddle with bushings and lube, I am always finalizing neck tension with the expander dies anyways, making the bushing sizing process obsolete if I had simply used the collet die in the first place.
My current target rifle is chambered in 6.5x47L which Lee does not make a stock Collet die for, so I am in the process of sending in an order to Lee for a custom die for it.
Seater die:
For the seater die, as mentioned above you can make marker increments around the top of the die, (halves, quarters, eighths, sixteenths) and line across the top of the seater dial for the pointer, to quickly estimate close to desired seating, and then turn just slightly to find exact seating by testing with your calipers and comparator. With a micrometer seating die you still need to use calipers and comparator to approach, then find the desired seating precision. On my Lee seaters, the 16 increments marked each represent roughly 0.005".
Are expensive micrometer seater dies "better"? Yes IMO for finding the the exact seating depth a little faster. When doing seating depth tests in a big batch of reloads (e.g. 0.003" increments), definitely the micrometer seaters are faster. I own several micrometer seaters (Forster, Whidden) and really like them. But I can get by easily with the marker increments method for the Lee seater. For my calibers that are not precision target calibers, (which I am constantly experimenting with seating depth and various bullets), I can get by quite well with the Lee seating die.
Lock rings:
I actually prefer the lee hand-tightened lock rings with the O-ring on the bottom (old style hex nut style, NOT the new knurled ones), on all dies except for the full length sizing die. The FL sizing die has to be perfectly exact and locked with another brand's lock ring with a set or clamp screw.
But my Lee press uses the quick change "Breech Lock Bushings", and these BLB's stay on each die. Therefore the hand tightened rubber O-ring lock ring stays tight against the bushing and maintains a die length close enough for the seater, collet, and crimp die. No fiddling with an allen key and set screw. The Lee seater dial is custom adjusted every time anyway, checking bullet seating depth with calipers and comparator, so it does not need a set/clamp screw locked die ring IMO.
But if you don't use the BLB's, or want a hard lock, then as others have mentioned, other brand's set/clamp screw style lock rings work just fine on Lee dies.
New Die Cleaning:
My only criticism of new in box Lee dies is that they come new loaded with metal fragments inside, left over from manufacturing. You need to take the dies apart and wash them to flush away the metal fragments. I use dish soap and water and a toothbrush, rinse, then douse with pure isopropyl alcohol (99%) to get the water off, let it flash dry, then spray with oil, wipe down, and finish with a spray of Ballistol. Takes not too long at all. But in the washing make sure you do it in a separate tub nowhere near the sink drain! You don't want a small part going down the drain!