i drive a vette so i need a good one, i have tried bel, they were ok, escort, ok, but the valentine 1 is the bomb, with the directional meters, and # of signal indicators, its a LOT better than anything else i have tried, mine works really good on X, K &Ka, ok on laser, but not many cops use laser in TX, maybe some DPS, but am very happy with my V-1, i have 2 of them lol, i drive pretty aggressively and havent gotten a ticket in 4 or 5 yrs (knock on wood), which my girlfriend absolutely cannot believe lol i scare the heck outta her sometimes when i'm in ther vette. FWIW the last ticket i got they paced me lol so watch your '6'.
though the V-1's are expensive ($500 IIRC) they have saved me 10X that easily, if ya are gonna spend some $$ and want the very best get the V-1, if not just get a $75 cobra, they are ok, have a lot more falses than a V-1, but are pretty sensitive.
i wouldnt waiste $$ on a bel, whistler or escort myself, they arent worth it imho if ya are gonna spend +$100 get the V-1..