Originally Posted by accord7362 
Thanks for asking:
Just to start with " Any LSP or Sealant is as good as the surface you prepared "
Secondly "You can enhanced the effect by staying under one chain product"
All three ranges are from good brands , I am sorry but I can only comment on Wolfgang as I never used the other two. I am very satisfied with WGDG.3 & I can bet it will come out brilliantly on black colour & I saw one of my friend & PW member @sardarsaeed black civic done by wolfgang products & result was amazing.
Yar durability kee koi gauge nahee , it depend on lot of things , may tuu wax top up hee itna karta hoon kay product ko non-durable honay hee nahee deta 
Sealants are non abrasive
You can compare price from different on line stores
Whatever brand you pick , dont forget to add the same brand paint cleanser/enhancer to the cart 
or clay zaroor karna
Else Usman(V1) @vague_one definitely know better than me regarding all three brands
Good luck & bathreen surface prepare karnaa
and yes regarding Wolfgang:
Wolfgang Deep Gloss Paint Sealant 3.0 is a water-based, oxygen activated paint sealant. After buffing off the sealant, the remaining coating needs to cure for 12 hours in dry conditions to fully bond to the paint. Exposure to moisture during this time will drown the polymers. For the best results, allow 12 hours of curing time.
Sorry yar pocha sealant ka thaa may nay ground zero kee taraf reverse gear laga dia :-#
Anyway hope it helps
dear bhai
1) lsp
lsp means last stage product in whole of ur detailing sequence.
lsp gives final touches to ur dulhan after completing her main makeup procedure to further enhance the beauty and protection as well.
usually in multistage detailing procedure finishing waxes/ detailer sprays, synthetic trigger sprays fall in lsp stage products
the choice of lsp all depend upon ur need like if ur choice is hell beautiful looks of ur dulhan with deep uniform shine ,than carnuaba based detailer spray wipe ( for example dodo juice basic of blings detailer spray )on natural finishing wax would be best but if ur aim is to enhance the protection than synthetic trigger sprays ( also called spray sealants ) best choice ( for example autofinesse tough coat very good choice )
2) amir bhai said "staying under one chain of product" means use same brand lsp which u have used in base , for example if u applied dodo juice prime cleanser in base and dodo juice wax over it than dodo juice detailer spray will maximize the outcomes as same brands products manufactured in view of compatability with rest of products in same brand , their chemically chemistry matches each others so give best bonding capabilities means longer protection with max outcomes.
[I]however detaikers around world love to play with different brands and make combinations of products with diffirent brands in view of their experience and knowledge about specific products and their bonding capabilities to each other products
for example if u use meguiars ultimate polish in base and want dodo juice wax on it , just give a wipe of ipa ( about 15 to 18% alcohal in distil water ) in between of polish and wax, ipa wipe will remove un-necessary polishing oils and provide best surface for dodo juice wax .
since question was which sealant is good so amir bhai beautifully responced that main thing is surface preparation , means first provide best base for sealant e.g claying, compounding ( if require ), polishing than sealant coat , if u going to use wolf gang sealant than better use wolfgang polish in base so chemically both products bond better for longer protection or if u dont have wolfgang polish and use any other brand polish than ipa wipe is must before sealant ( infact i also give ipa wipe in between of same brand products )
3) in last amir bhai proposed give proper curing time to sealant before giving any finishing wax coat as sealants usually require longer curing time for best bounding and giving max looks
i am not sure i clarify you or further confuse u [/I]:P
