Yes indeed like i said heard only good things about asservissante. I don't mind them advertising daily or not on merb that much, even tough i must admit on a few ocasion when i was on plan B gear i called the merb agencies one by one and totally forgot asservissante was a reliable one despite not being an advertiser.
My problem, wich is a personal thing is im looking mostly for girls that offer CIM, so i tend to go more with agencies that list services. I know there is always the YMMV factor that could happen, but i hate asking for that on the phone, "does she allow cim" its embarassing a bit to me. When its clearly listed like G4U i know what to expect and during the session i subtily mention it and it goes naturally.
When it comes to Angel Escorts, just like you, they where my go-to agency for a while couple years back, one of the first to list services for every girls, i apreciated that, profile and pics where nice and so on. But its been a hit and miss with them. Now don't get me wrong, i NEVER had anything TERRIBLE, but punctuality was often totally random, and when it comes to girls i had some awesome experiences, but some pretty bad ones too. If i look at my log i can count 3 goods, 2 disapointing and 1 "mixed" as the girl was extremely business oriented, wich was a total mood killer at first and didn't had any GFE attitude, but she did performed good in bed, so i guess the session was saved because it turned out a bit more PSE... She was blond, had fake tits, and was from another country so i kinda enjoyed those things lol
Xxxtase i pretty much always had good customer services, only thing is the last year or so i was extremely unlucky as when i was in town the girls i wanted to see didn't worked. Too bad, there is some girls that really interest me in there roster.
Anyway, when it comes to deciding 1 agency for a 10 years spam, i think its too hard. XXXtase has been in business for a while and have keep a good reputation. Satin Dreamz and MTL sex city as well. Mike's G4U/GG has been rocking the map since a couple years back, but lately MTL GFE got some ex-GGs and has build an impressive roster as well...
I feel this business is like hockey, it varies every year or so but some teams remain dominant for a few years.