I' ve changed a lot of mice in the last year and I' ll probably stay in this one for a while. Before, I had and tried for a long time: razer deathadder V2 for wireless, logitech G PRO wireless, razer viper ultimate, glorious model D wireless, RAT3 and this. I would like it to be lighter, this aggressive grip would be nice with a lighter mouse. I switched from an ergonomic glorious model D wireless mouse, so the grip is definitely not so comfortable. As someone wrote here, some of the aggressive grip is strained by the hand (I have no idea if the tendons or muscles), but it is necessary to give it more than one evening of steaming - my hand has adjusted after about two days and now we are sitting more than the previous mouse. It will probably not be much for a LAN party for an all-day steaming 10h +, but I plan to take ERGO in my hand and move on. This mouse is mainly about accuracy and I just feel like I' m more accurate and more successful with it - I play a lot of PUBG and there' s a necessity. I.e. I guess this mouse is bought by people who know it through marketing shroud - I believe there are FPS players who appreciate it very much as the best they have ever had - for me from the list above it' s the best I' ve ever had. But if someone expects ERGO to feel like that, they shouldn' t buy it. I would advise FPS players who mean it a little seriously to at least try it and not return the next day, but try to “sit down“. TGLTN, for example, plays shape mice from Zowie EC1 - I haven' t tried it yet, but I' m waiting for them to come out with a new, lighter and wireless version - it should come - this will probably be the only competitor I know coming and I' ll try it too. Otherwise, the aggressive grip has its advantages, the fact that holding the mouse partially “from below“ - beveled edges - simply gives accuracy, even if you have a slightly sweaty buckle - it just slips out of my hand - for example. deatadder or viper ultimate. It has a nice sensor and I feel accuracy under my hands (e. g. higher than glorious model D wireless). I play claw grip, but with a longer time when nothing happens, I can easily switch to PALM (for PUBG, for example, move through the landscape) and I subconsciously switch grip at the event and I' m very accurate. I don' t know what an aggressive claw grip will do with this mouse all day playing - I' ll be back for reviews on purpose and I' d love to read the experiences of others. It' s a pity, in my opinion, it would be complete perfection, if it were lighter, the aggressive grip might not work so hard. Her hand is big - 20 cm and even though it is small, my back bulge will fit my hand. I' m not solving the battery, it' s better than what I had before. but I do not address the details in this area. I think the glide on the mat is good. My experience with all mice is as follows - shape is the king - and since it' s completely atypical here, it needs to be tried and I don' t think you' ll read this very much. Good luck with the choice of mice, but trying more species but it' s worth it !: )